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In the countless
landscapes of life on Earth,
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00:00:45,855 --> 00:00:48,702
things are not always what they seem.
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00:00:53,215 --> 00:00:57,208
What appears fragile may be fierce.
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00:01:02,175 --> 00:01:06,234
What appears innocent
may be calculating.
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00:01:13,566 --> 00:01:17,756
Clever illusion
is more than a means of survival.
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00:01:18,655 --> 00:01:21,208
It's also a story of love.
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00:01:25,567 --> 00:01:27,509
And of the mysterious force
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00:01:27,551 --> 00:01:32,373
relentlessly driving all living things
to reproduce themselves.
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By any means necessary.
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00:01:38,526 --> 00:01:40,566
Including deception.
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00:01:49,631 --> 00:01:52,795
I live in forests like this.
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00:01:55,198 --> 00:01:57,849
But then, I live almost everywhere.
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00:02:24,479 --> 00:02:29,978
This tropical forest appears still,
but everywhere living things
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00:02:30,014 --> 00:02:34,237
are following the mute commands
of their genes to find mates
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00:02:34,366 --> 00:02:37,749
and to ensure
that their species lives on.
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00:02:52,831 --> 00:02:56,759
One might imagine that the most
important life forms are large,
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00:02:57,631 --> 00:02:59,638
or flashy,
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00:03:00,126 --> 00:03:02,493
or smart.
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00:03:06,846 --> 00:03:09,497
But it is love among the little things
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00:03:09,567 --> 00:03:13,942
that actually runs
the vast machinery of life.
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00:03:19,230 --> 00:03:23,605
Some of the most important events
on Earth occur quietly
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00:03:23,743 --> 00:03:27,223
in small and hidden worlds.
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00:03:35,935 --> 00:03:40,245
And some species
critical to the grand scheme of life
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00:03:40,287 --> 00:03:42,621
are not what you expect.
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00:03:44,798 --> 00:03:48,727
This is a story
about one of the most vital
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00:03:48,863 --> 00:03:52,921
and ingenious of all living things.
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It's my story.
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00:04:00,543 --> 00:04:02,430
I'm a flower.
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00:04:14,142 --> 00:04:18,332
I'm going to tell you,
on behalf of all flowers,
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00:04:18,719 --> 00:04:21,948
about life from our point of view.
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00:04:22,590 --> 00:04:26,136
You think we're just
fragile wisps of beauty,
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00:04:26,270 --> 00:04:29,848
unaware that beauty is our strategy.
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We're more important than you know.
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We've helped life prosper
across the ages.
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00:04:38,783 --> 00:04:42,939
Without us, humans might not survive.
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00:04:54,911 --> 00:04:58,010
Beauty is not always what it seems.
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00:05:03,903 --> 00:05:09,402
Beauty can be a tool of survival
and seduction.
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00:05:20,350 --> 00:05:24,791
Every beat of every wing
in every forest
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00:05:24,830 --> 00:05:30,297
is somehow keeping the great
enterprise of life streaming forward.
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00:05:40,702 --> 00:05:45,820
The constant motion of life
makes love connections possible.
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00:06:00,862 --> 00:06:04,921
Animals with wings and legs
can search for mates.
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00:06:05,726 --> 00:06:10,429
But we plants
are forever rooted in one place.
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00:06:11,807 --> 00:06:16,924
So we entice animals to us
by offering rewards.
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When they come, we use them
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00:06:20,830 --> 00:06:24,987
to make the love connections
we can't make ourselves.
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00:06:27,038 --> 00:06:30,551
In this forest in Panama,
a tropical orchid bee
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00:06:30,590 --> 00:06:35,479
has picked up an alluring scent
and he's searching for the source.
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00:06:36,990 --> 00:06:39,892
It's me, an orchid.
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And I'm one of the most cunning
of all flowers.
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00:06:44,191 --> 00:06:48,533
My perfume is a trick.
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00:06:58,591 --> 00:07:04,374
The orchid bee depends on me
for help with his central mission in life.
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00:07:04,959 --> 00:07:07,162
To mate with a female.
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00:07:16,606 --> 00:07:20,916
For weeks, he collects scent oils
from orchids.
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00:07:21,822 --> 00:07:25,532
Eventually, he uses
his mix of fragrances
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00:07:25,566 --> 00:07:29,625
as a kind of orchid "cologne"
to attract a female.
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00:07:30,494 --> 00:07:35,098
The scents come from me,
a bucket orchid.
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00:07:35,454 --> 00:07:38,269
The bucket is part of my trick.
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The bee has to climb a waxy slope
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to reach the scent oils
cleverly hidden beneath a hood.
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00:08:07,678 --> 00:08:13,177
I've filled my bucket with a sticky fluid
that makes the bee sink.
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00:08:33,726 --> 00:08:36,792
I provide only one escape route,
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which leads him just where I want him.
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00:09:09,438 --> 00:09:14,708
After the bee climbs out,
I grip him tightly.
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00:09:15,742 --> 00:09:18,808
I glue two pollen sacs to his back,
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00:09:19,582 --> 00:09:24,055
each filled with tens of thousands
of pollen grains.
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00:09:26,847 --> 00:09:30,262
These are the only pollen sacs
I will ever produce,
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00:09:30,366 --> 00:09:34,556
so I won't let him go
until the glue is dry.
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00:09:39,294 --> 00:09:43,517
I may wait an hour or more
before loosening my grip.
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00:09:46,462 --> 00:09:50,837
This one bee now carries my legacy.
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00:09:53,534 --> 00:09:57,942
When he comes upon the scent
of another orchid that same day,
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00:09:58,623 --> 00:10:00,565
he heads right for it.
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00:10:01,630 --> 00:10:04,827
If he slips into the bucket
of this second orchid,
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00:10:05,086 --> 00:10:08,348
the pollen sacs on his back
will come unglued.
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00:10:08,446 --> 00:10:10,748
Pollination can occur.
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A new orchid generation can begin.
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How nature has created
such intricate strategies
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is a mystery of life.
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00:10:24,191 --> 00:10:28,980
Yet we can unravel some of the puzzle
if we go back in time.
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00:10:30,270 --> 00:10:33,434
Back nearly 200 million years.
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00:10:35,038 --> 00:10:37,689
During the Age of Reptiles,
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there were no mammals
larger than a mouse.
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For a very long time,
there were no flowers, either.
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00:10:48,926 --> 00:10:53,880
Without flowers,
Earth was a drab place.
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00:10:58,462 --> 00:11:05,020
But about 135 million years ago,
life began to change dramatically
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00:11:05,150 --> 00:11:08,216
because of an invention.
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00:11:14,558 --> 00:11:17,592
When dinosaurs roamed forests
like this,
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00:11:17,918 --> 00:11:21,660
most plants spread their pollen
on the wind.
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00:11:29,406 --> 00:11:34,905
If they were lucky, a few pollen grains
would reach another tree,
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00:11:35,487 --> 00:11:39,131
creating seeds that would become
the next generation.
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00:11:48,446 --> 00:11:54,229
It still works today for pines,
grasses and many other plants.
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00:11:57,726 --> 00:12:00,279
But it's not very efficient.
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00:12:01,982 --> 00:12:04,949
Most of the pollen goes to waste.
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00:12:09,438 --> 00:12:15,384
Some unknown plant in the deep past,
perhaps a magnolia ancestor,
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00:12:15,614 --> 00:12:21,145
produced a device that would ensure
delivery of pollen directly to a mate.
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00:12:21,214 --> 00:12:24,858
It would prove to be
one of the most important events
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00:12:24,894 --> 00:12:27,283
in the history of life.
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00:12:27,646 --> 00:12:32,468
The device was me. A flower.
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00:12:35,614 --> 00:12:39,923
Our blossoms act like
advertising billboards.
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00:12:41,246 --> 00:12:47,127
Our perfumes and tasty rewards
lure passing creatures to us.
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00:12:47,390 --> 00:12:49,659
And we load them up with pollen
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they will unknowingly carry
to other flowers.
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00:12:59,166 --> 00:13:02,744
Beetles were among
Our first "love messengers".
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00:13:11,870 --> 00:13:15,186
Our fruit, seeds, nectar and pollen
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became crucial foods
for millions of species.
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00:13:20,638 --> 00:13:25,907
We flourished
and became a keystone life form.
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00:13:26,046 --> 00:13:30,104
Today, our pollination schemes
knit together the fabric of life
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00:13:30,142 --> 00:13:32,280
across the planet.
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00:13:38,366 --> 00:13:42,971
Overtime,
our pollination tactics evolved.
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Pollinators adapted in turn.
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00:13:53,662 --> 00:13:58,005
And life everywhere
became infinitely more diverse.
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00:14:04,893 --> 00:14:07,282
There's an example in this rain forest.
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00:14:10,782 --> 00:14:16,117
Some of us began hiding our nectar
in tubes.
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00:14:19,710 --> 00:14:23,190
It encouraged some pollinators
to specialize,
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00:14:23,326 --> 00:14:26,457
developing mutually
beneficial relationships.
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00:14:55,230 --> 00:15:00,052
One of these pollinators
evolved a longer beak for nectar tubes.
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00:15:08,542 --> 00:15:12,437
And wings that can beat up
to 200 times a second.
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00:15:26,686 --> 00:15:29,981
With these unique aerobatic skills,
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00:15:31,742 --> 00:15:34,197
hummingbirds can hover to feed
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00:15:35,102 --> 00:15:37,971
and maneuver like airborne dancers.
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00:16:09,886 --> 00:16:13,464
Now, after millions of years,
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00:16:13,662 --> 00:16:17,556
pollination partnerships
occur almost everywhere.
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00:16:18,174 --> 00:16:21,851
In luxurious habitats like the rain forest,
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00:16:22,302 --> 00:16:26,939
but also in some of the harshest places
on Earth.
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00:16:32,478 --> 00:16:35,260
The Sonoran Desert
of northern Mexico
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is a world of blistering heat.
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00:16:42,237 --> 00:16:44,474
I live here, too.
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00:17:06,941 --> 00:17:13,051
We cacti are flowering plants
central to life in this arid world.
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00:17:18,174 --> 00:17:20,923
Living as long as 150 years,
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00:17:21,086 --> 00:17:26,007
we help feed generation
after generation of desert creatures.
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00:17:31,486 --> 00:17:34,268
We are living water tanks.
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00:17:34,622 --> 00:17:36,629
That's how we survive.
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00:17:37,598 --> 00:17:43,675
But to reproduce, we form alliances
with unusual partners.
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00:17:46,078 --> 00:17:50,900
In this harsh realm,
our strategy is not to deceive,
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00:17:52,190 --> 00:17:53,815
but to nurture.
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00:18:00,861 --> 00:18:05,683
When pollinated,
we cactus flowers turn into fruit
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00:18:05,757 --> 00:18:08,659
with seeds to start a new generation.
137
00:18:18,910 --> 00:18:23,219
So, on summer nights,
to attract pollinators,
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00:18:23,805 --> 00:18:27,832
we open a few nectar-filled flowers.
139
00:18:28,990 --> 00:18:31,576
And we wait.
140
00:18:38,686 --> 00:18:43,323
Elsewhere in the night,
our pollinators wait, too.
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00:18:43,486 --> 00:18:45,275
When the time is right,
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00:18:45,310 --> 00:18:49,849
they will leave their home
on an island in the Sea of Cortez
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00:18:49,981 --> 00:18:53,560
to search for the white flowers
beckoning from the desert.
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00:19:22,590 --> 00:19:26,845
These nectar-feeding bats
are all female.
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00:19:27,678 --> 00:19:30,744
They live apart from males
while pregnant.
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00:19:31,005 --> 00:19:33,372
Most are due to give birth soon.
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00:19:33,758 --> 00:19:36,278
Some are already nursing.
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00:19:37,021 --> 00:19:39,836
They desperately need nourishment.
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00:20:00,509 --> 00:20:03,259
Pollen sticking to their faces rubs off
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00:20:03,389 --> 00:20:06,651
and pollinates the flower
of the next cactus.
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00:20:20,925 --> 00:20:22,649
A new mother gulps nectar
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00:20:22,718 --> 00:20:26,580
so she can nurse a baby
born only moments ago.
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00:20:31,069 --> 00:20:35,542
Each flower opens on only one night,
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00:20:35,710 --> 00:20:41,755
its sole opportunity to spread its pollen
across the desert on wings.
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00:20:43,005 --> 00:20:48,504
In billions of these brief intersections
of the animal and plant worlds,
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00:20:48,638 --> 00:20:53,111
life regenerates itself
over and over again.
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00:21:57,406 --> 00:22:00,853
If the flowers
were pollinated and fertilized,
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they will become nourishing fruit.
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00:22:05,661 --> 00:22:11,029
A wait begins among hungry creatures
For the next gifts of the cacti.
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00:22:17,437 --> 00:22:19,576
A waiting game has also begun
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among very different flowers
in a very different world.
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00:22:26,013 --> 00:22:28,402
The farm fields
of the American Midwest.
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00:22:32,797 --> 00:22:34,968
I live here, too.
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00:22:35,806 --> 00:22:39,384
I'm a kind of wildflower
growing near the crops.
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00:22:42,366 --> 00:22:47,450
Each spring, I wait for a pollinator
to sweep in from far away.
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00:22:49,053 --> 00:22:54,519
I thrive across North America,
but I'm considered a weed.
167
00:22:55,069 --> 00:22:59,739
"Milkweed" people call me,
because of my special sap.
168
00:23:07,421 --> 00:23:09,396
I make a milky poison
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00:23:09,437 --> 00:23:13,179
that can sicken many animals
that might feed on me.
170
00:23:14,654 --> 00:23:17,337
But I also produce sweet nectar
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00:23:17,821 --> 00:23:20,920
that draws a kind of beautiful pollinator
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00:23:21,086 --> 00:23:24,828
from a hidden retreat
more than 1,000 miles away.
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00:23:38,525 --> 00:23:41,689
In a forest on a mountain
in central Mexico,
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00:23:42,398 --> 00:23:46,521
monarch butterflies are amassed
by the tens of millions,
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waiting for the rising sun
to energize their bodies.
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00:24:03,229 --> 00:24:07,735
In clusters so dense
they can bend the trees,
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00:24:07,933 --> 00:24:10,650
they rest and prepare themselves
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00:24:10,685 --> 00:24:13,751
For the long journey northward
to reach the milkweed.
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00:24:18,717 --> 00:24:22,198
Every autumn,
to avoid freezing in the north,
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00:24:22,366 --> 00:24:26,294
they fly here
from as far away as Canada
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00:24:26,366 --> 00:24:32,116
and perch in fir trees at an elevation
of more than 1 1,000 feet.
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00:24:32,926 --> 00:24:37,715
It's the perfect climate to help them
conserve energy through the winter.
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00:24:43,293 --> 00:24:49,785
As the morning sun warms their wings,
they begin to cascade downward.
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00:26:04,573 --> 00:26:07,573
To stay alive,
they must rely on stored fat
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00:26:07,613 --> 00:26:10,297
they accumulated last fall.
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00:26:14,621 --> 00:26:17,272
But to turn fat into energy,
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00:26:19,069 --> 00:26:20,760
they need water.
188
00:26:24,573 --> 00:26:29,756
Their mission each day
is to search for a drink of water.
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00:27:34,269 --> 00:27:35,830
They must maintain their strength
190
00:27:35,869 --> 00:27:40,691
For the exhausting flight
from here to the southern U.S.
191
00:27:50,493 --> 00:27:54,387
From there, the children
and grandchildren of these monarchs
192
00:27:54,429 --> 00:27:58,652
Will journey on northward
through the summer to Canada.
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00:28:24,605 --> 00:28:26,012
Their thirst quenched,
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00:28:27,101 --> 00:28:30,876
the monarchs return to the trees
by late afternoon.
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00:28:37,565 --> 00:28:38,994
By next autumn,
196
00:28:39,101 --> 00:28:44,502
Their great-great grandchildren
will return to these same forests.
197
00:28:58,493 --> 00:29:01,657
Soon they will set out
on the longest migration
198
00:29:01,693 --> 00:29:03,449
of any butterfly on Earth
199
00:29:04,797 --> 00:29:10,132
to reach a little-noticed weed
half a continent away.
200
00:29:14,173 --> 00:29:18,363
Not all plant and animal relationships
are so exotic.
201
00:29:19,517 --> 00:29:21,241
But even a familiar one,
202
00:29:21,597 --> 00:29:25,241
involving a common food
and well-known insect,
203
00:29:25,373 --> 00:29:27,795
is an example of hidden beauty.
204
00:29:28,477 --> 00:29:33,081
People raise this flowering plant,
not for the flowers,
205
00:29:33,245 --> 00:29:35,416
but for what the flowers turn into.
206
00:29:36,605 --> 00:29:38,198
I live here, too.
207
00:29:39,037 --> 00:29:43,608
I'm a tomato flower,
and I lock up my pollen tightly,
208
00:29:44,413 --> 00:29:48,821
so that only the most
efficient pollinators can get it.
209
00:29:50,077 --> 00:29:53,460
My favorite is a very hard worker.
210
00:29:54,589 --> 00:29:56,214
The bumblebee,
211
00:29:57,341 --> 00:30:00,407
who gathers pollen
for the egg-laying queen
212
00:30:00,509 --> 00:30:02,713
and the developing young.
213
00:30:09,309 --> 00:30:14,295
Bumblebees are one of the few insects
that care for their offspring.
214
00:30:16,157 --> 00:30:20,947
When damage occurs in the hive,
a worker quickly repairs the cell.
215
00:30:23,197 --> 00:30:27,637
Honey made from flower nectar
is kept in wax pots.
216
00:30:27,965 --> 00:30:29,372
The adults eat it
217
00:30:29,405 --> 00:30:32,536
and regurgitate it into the cells
to feed the young.
218
00:30:33,789 --> 00:30:39,703
They need a lot of pollen and nectar,
and searching for it is a constant chore.
219
00:31:04,668 --> 00:31:07,035
They spot a garden nearby.
220
00:31:24,125 --> 00:31:26,491
As the foragers investigate,
221
00:31:26,525 --> 00:31:29,143
they see things
invisible to the human eye.
222
00:31:31,741 --> 00:31:35,964
Because they are able
to perceive ultraviolet light,
223
00:31:36,125 --> 00:31:39,835
bees can detect markings
produced by flowers
224
00:31:39,869 --> 00:31:44,244
to guide pollinators
directly to nectar and pollen.
225
00:31:53,949 --> 00:31:57,560
The bees need more food
than the garden can provide.
226
00:32:06,141 --> 00:32:09,207
Ahead, they see
what they're looking for.
227
00:32:50,780 --> 00:32:54,872
So begins a fascinating
kind of pollination.
228
00:32:56,221 --> 00:32:59,669
The bee bites to hold on tight,
229
00:33:00,349 --> 00:33:03,578
then blasts the locked-up pollen loose
230
00:33:03,645 --> 00:33:09,079
by vibrating her flight muscles
up to 440 times per second.
231
00:33:16,188 --> 00:33:20,444
She packs the pollen into baskets
on her back legs.
232
00:33:20,732 --> 00:33:25,369
Her vibration rate is the same
as the musical note A.
233
00:33:26,429 --> 00:33:29,528
She's like a living tuning fork.
234
00:33:32,060 --> 00:33:34,995
Few flowers are "buzz pollinated",
235
00:33:35,292 --> 00:33:39,635
but they include some favorite foods
enjoyed by human beings.
236
00:33:39,773 --> 00:33:43,035
The workers will keep at this
until they have enough pollen
237
00:33:43,068 --> 00:33:46,297
to feed the colony's
newly developing brood.
238
00:33:46,525 --> 00:33:50,900
Such flower rewards
sustain billions of creatures,
239
00:33:51,549 --> 00:33:55,706
sometimes in places
where there is little else to eat.
240
00:34:08,028 --> 00:34:11,290
Weeks have passed
in the Sonoran Desert.
241
00:34:15,645 --> 00:34:19,355
My cactus flowers
should have turned to fruit by now.
242
00:34:39,356 --> 00:34:42,258
The female bats are depending on it.
243
00:34:42,492 --> 00:34:45,045
They can't continue
to nurse their young
244
00:34:45,116 --> 00:34:47,189
without a new source of food.
245
00:34:48,125 --> 00:34:51,027
The cacti may be their only hope.
246
00:35:11,165 --> 00:35:13,336
From their island cave,
247
00:35:15,005 --> 00:35:17,820
they make a long night flight.
248
00:35:20,540 --> 00:35:23,442
A round-trip of more than 60 miles.
249
00:35:38,940 --> 00:35:43,163
It's a demanding journey,
but a feast awaits.
250
00:36:19,677 --> 00:36:22,808
The mothers need nourishment.
251
00:36:31,517 --> 00:36:35,161
And so do those
carrying new life within.
252
00:36:56,636 --> 00:37:00,760
As they gorge on the fruit,
they are also consuming seeds,
253
00:37:01,244 --> 00:37:03,765
which they eventually spread
across the desert.
254
00:37:09,084 --> 00:37:13,275
We cacti are key
to Sonoran Desert life.
255
00:37:15,804 --> 00:37:19,449
But we couldn't endure
without the help of bats.
256
00:37:19,484 --> 00:37:23,925
And the bats and their young
couldn't survive without our help.
257
00:37:26,364 --> 00:37:30,707
This crucial connection
between plants and animals
258
00:37:30,748 --> 00:37:32,472
helps keep the desert alive.
259
00:37:34,588 --> 00:37:37,458
There are others who depend
on the cactus fruit,
260
00:37:39,196 --> 00:37:43,190
collecting it at night so it can be
consumed fresh each day.
261
00:37:46,268 --> 00:37:49,880
Their distant ancestors
so adored cactus fruit
262
00:37:51,068 --> 00:37:55,291
that they honored the cacti
as revered members of their tribes.
263
00:38:06,940 --> 00:38:11,032
Today, it's a way for people
to provide for their families.
264
00:38:15,228 --> 00:38:17,716
As well as a sweet pleasure.
265
00:38:20,349 --> 00:38:24,626
So sweet that people plant
cacti seeds in their gardens.
266
00:38:25,372 --> 00:38:27,707
From a flower's point of view,
267
00:38:27,740 --> 00:38:31,864
humans are just another species
we can use for our purposes.
268
00:38:40,924 --> 00:38:46,041
But a delicious reward in one place
can be the cause of conflict in another.
269
00:38:50,748 --> 00:38:52,472
Unlike the desert,
270
00:38:52,508 --> 00:38:56,818
a tropical rain forest
is rich in resources
271
00:38:56,860 --> 00:38:59,348
and competition.
272
00:39:04,253 --> 00:39:07,831
Survival favors
the bold and aggressive.
273
00:39:40,796 --> 00:39:43,665
Even the seemingly gentle
turn out to be warriors.
274
00:39:46,845 --> 00:39:48,732
And nectar-bearing flowers
275
00:39:48,765 --> 00:39:50,707
are territory to defend.
276
00:39:58,269 --> 00:40:03,419
The winners will spread pollen
that helps keep the forest lush.
277
00:40:04,221 --> 00:40:06,108
One stakes his claim.
278
00:40:10,620 --> 00:40:13,042
And the challengers arrive.
279
00:40:17,020 --> 00:40:18,481
It's a standoff.
280
00:40:20,860 --> 00:40:22,900
Then, the first move.
281
00:41:41,436 --> 00:41:44,371
Even a warrior can make a mistake.
282
00:41:57,020 --> 00:42:01,722
The hidden spectacles of pollination
can involve a few tiny rivals.
283
00:42:02,908 --> 00:42:05,843
Or hundreds of millions of voyagers.
284
00:42:09,500 --> 00:42:12,631
From the high forests in Mexico,
285
00:42:12,669 --> 00:42:15,003
the great migration
of monarch butterflies
286
00:42:15,036 --> 00:42:18,452
heads northward
toward the middle of North America.
287
00:42:39,676 --> 00:42:43,091
In their long round-trip each summer,
288
00:42:43,132 --> 00:42:45,554
the vast monarch population
289
00:42:45,596 --> 00:42:50,298
will help pollinate and sustain
more than 200 kinds of flowers.
290
00:42:58,588 --> 00:43:02,712
As this first leg of the migration
reaches farmland,
291
00:43:02,748 --> 00:43:04,439
the butterflies are tiring.
292
00:43:16,828 --> 00:43:18,967
It's a strenuous flight.
293
00:43:19,004 --> 00:43:20,827
They need fuel.
294
00:43:21,628 --> 00:43:23,451
That's where I come in.
295
00:43:26,332 --> 00:43:30,261
Milkweed flowers in a variety
of colors and shapes
296
00:43:30,300 --> 00:43:32,853
serve as refueling stations
297
00:43:32,892 --> 00:43:36,089
in return for a little help
spreading pollen.
298
00:43:41,692 --> 00:43:43,732
We milkweeds are wily.
299
00:43:44,316 --> 00:43:46,291
Our flowers have narrow slits
300
00:43:46,332 --> 00:43:49,332
that can snag the leg
of a feeding monarch
301
00:43:49,372 --> 00:43:51,478
and hold her in a vise-like grip.
302
00:43:52,476 --> 00:43:54,996
When she tries to jerk free,
303
00:43:55,164 --> 00:43:57,914
she snags a cord,
releasing sacs of pollen
304
00:43:57,948 --> 00:44:01,014
she'll unknowingly carry
to the next milkweed.
305
00:44:13,212 --> 00:44:15,929
As they migrate, they also mate.
306
00:44:17,404 --> 00:44:19,641
This overwintering
generation of monarchs
307
00:44:19,676 --> 00:44:22,164
may live nine months.
308
00:44:22,204 --> 00:44:25,553
They're among the longest-lived
butterflies on Earth.
309
00:44:27,100 --> 00:44:29,751
But now their days are numbered.
310
00:44:29,788 --> 00:44:33,717
They have to produce young
to keep the migration going.
311
00:44:33,948 --> 00:44:37,243
Sometimes another male
tries to intervene.
312
00:44:37,276 --> 00:44:42,132
Even in small love stories,
victory goes to the most determined.
313
00:44:48,796 --> 00:44:51,796
Eventually, the male
sweeps her off her feet
314
00:44:51,836 --> 00:44:55,152
and carries her to the privacy
of a tree branch.
315
00:44:56,988 --> 00:45:01,363
He may keep her in his embrace
for up to 16 hours.
316
00:45:12,732 --> 00:45:17,042
Within two weeks,
each female attaches up to 400 eggs
317
00:45:17,084 --> 00:45:21,013
to the underside of milkweed leaves,
and only milkweed leaves.
318
00:45:22,076 --> 00:45:26,516
Unlike bees, monarchs rely
not on the care of their young,
319
00:45:26,556 --> 00:45:28,923
but quantity.
320
00:45:28,956 --> 00:45:30,418
Enough eggs
321
00:45:30,460 --> 00:45:35,097
and some are bound to survive
the onslaught of hungry insects.
322
00:45:57,788 --> 00:46:02,261
The job of a monarch caterpillar
is to eat relentlessly.
323
00:46:02,300 --> 00:46:04,788
First, its own egg case.
324
00:46:05,084 --> 00:46:07,801
Then, milkweed leaves exclusively,
325
00:46:07,836 --> 00:46:11,927
growing to 2,000 times its original size.
326
00:46:14,396 --> 00:46:16,435
If it survives.
327
00:46:49,659 --> 00:46:52,562
Fortunately,
hundreds of millions survive.
328
00:46:59,516 --> 00:47:01,654
Their mothers put them on milkweed
for a reason.
329
00:47:03,132 --> 00:47:06,263
The toxic sap settles in their bodies.
330
00:47:06,300 --> 00:47:08,755
The monarchs are unaffected,
331
00:47:08,796 --> 00:47:12,626
but a predator who eats one
is likely to become ill
332
00:47:12,668 --> 00:47:14,904
and soon learns to avoid them.
333
00:47:19,419 --> 00:47:23,216
Eventually, each caterpillar
finds a secure spot
334
00:47:23,259 --> 00:47:26,042
and spins silk to hold onto.
335
00:47:34,427 --> 00:47:37,973
It's time to become a butterfly.
336
00:47:40,092 --> 00:47:43,321
The caterpillar grips the silk
with its back legs
337
00:47:43,356 --> 00:47:45,211
and hangs upside down.
338
00:47:51,516 --> 00:47:55,193
Through contractions,
the skin is loosened.
339
00:48:06,332 --> 00:48:08,503
Eventually it splits,
340
00:48:09,372 --> 00:48:11,892
revealing a new casing beneath.
341
00:48:16,892 --> 00:48:19,826
Now, a dangerous maneuver.
342
00:48:21,884 --> 00:48:25,975
In a matter of seconds,
as the old skin and legs fall away,
343
00:48:26,011 --> 00:48:29,011
she must thrust hooks
from the new case into the silk.
344
00:48:30,076 --> 00:48:33,010
If this delicate handoff fails,
345
00:48:33,116 --> 00:48:36,858
she will fall to the ground helpless
and be eaten.
346
00:48:55,771 --> 00:49:00,343
Within this protective shell,
Her caterpillar self is fading away.
347
00:49:03,676 --> 00:49:05,530
Across the ages,
348
00:49:05,564 --> 00:49:08,859
humans have seen
in this transformation
349
00:49:09,148 --> 00:49:11,515
the ultimate symbol of change.
350
00:49:49,308 --> 00:49:52,985
Her body begins to pump fluid
that will inflate her wings.
351
00:49:58,235 --> 00:50:01,584
The scales on the wings
are shaped to reflect light
352
00:50:01,659 --> 00:50:04,561
so that it produces a bright coloration.
353
00:50:07,260 --> 00:50:11,254
Contrasting orange and black
are warning colors in nature.
354
00:50:14,043 --> 00:50:17,043
She still carries milkweed toxins,
355
00:50:17,084 --> 00:50:20,379
and these colors say,
"I'm not good to eat".
356
00:50:21,756 --> 00:50:24,178
This strategy is so successful
357
00:50:24,220 --> 00:50:28,595
that some butterflies without poison
copy the monarch's colors.
358
00:50:51,579 --> 00:50:54,329
We milkweeds
will provide the flight fuel
359
00:50:54,363 --> 00:50:56,535
as this first generation of summer
360
00:50:56,572 --> 00:50:59,801
continues the monarch's
long migration.
361
00:51:02,268 --> 00:51:04,821
There is no rest for pollinators,
362
00:51:05,531 --> 00:51:07,833
not for butterflies
363
00:51:07,899 --> 00:51:10,485
and not for one very hard worker.
364
00:51:17,020 --> 00:51:18,546
In a farm field,
365
00:51:18,588 --> 00:51:23,061
bumblebees are finishing
the exhausting job of buzz pollinating.
366
00:51:23,900 --> 00:51:26,321
When they're loaded with pollen,
367
00:51:26,364 --> 00:51:30,193
it's time for the bees to return home
and store it.
368
00:52:23,964 --> 00:52:26,517
The young are beginning to emerge.
369
00:52:33,403 --> 00:52:37,681
They'll need the colony's treasure
of pollen and honey for nourishment.
370
00:52:40,315 --> 00:52:42,901
But the colony's riches
can also attract danger.
371
00:52:45,979 --> 00:52:51,129
A skunk will eat not only the pollen,
but the bumblebees and their young.
372
00:52:51,164 --> 00:52:54,011
A threat to the colony
is one of the few times
373
00:52:54,044 --> 00:52:57,393
these passive bees
will use their stingers.
374
00:53:10,779 --> 00:53:14,489
With safety restored,
colony life goes on.
375
00:53:23,036 --> 00:53:27,411
A young bee entering the world
will live on pollen and honey
376
00:53:27,451 --> 00:53:29,818
in a home made of wax.
377
00:53:33,244 --> 00:53:35,665
All are gifts from flowers.
378
00:53:51,259 --> 00:53:53,812
And within a tomato blossom,
379
00:53:54,108 --> 00:53:56,595
another kind of new life is beginning.
380
00:53:58,812 --> 00:54:01,081
This is how I reproduce.
381
00:54:05,851 --> 00:54:09,746
Pollen grains brought by bees
from another tomato flower
382
00:54:09,788 --> 00:54:12,821
send tubes
to the center of the blossom,
383
00:54:16,604 --> 00:54:19,287
delivering reproductive cells
to the ovary.
384
00:54:22,460 --> 00:54:24,347
Forming seeds,
385
00:54:24,380 --> 00:54:27,795
each of which grew
from one grain of pollen.
386
00:54:29,499 --> 00:54:31,539
Fertilization occurs.
387
00:54:33,403 --> 00:54:38,389
Gradually, a fleshy container
forms around all of the seeds.
388
00:54:46,716 --> 00:54:51,091
Most people don't realize
that what they eat is a yellow flower
389
00:54:51,516 --> 00:54:53,883
that turns into a tomato.
390
00:55:09,787 --> 00:55:11,194
Around the world,
391
00:55:11,228 --> 00:55:14,228
people depend on farming
for their sustenance,
392
00:55:14,267 --> 00:55:17,234
as they have for thousands of years.
393
00:55:17,275 --> 00:55:19,185
By growing their own food,
394
00:55:19,227 --> 00:55:21,878
people were able
to develop civilizations
395
00:55:21,915 --> 00:55:23,923
and rise to dominance.
396
00:55:26,011 --> 00:55:30,267
Humans consider agriculture
one of their great advances.
397
00:55:32,475 --> 00:55:35,574
But it was actually to our benefit.
398
00:55:39,483 --> 00:55:41,971
People now take care of us
399
00:55:43,067 --> 00:55:45,206
and spread our seeds.
400
00:55:46,715 --> 00:55:50,774
Who is in control of whom, really?
401
00:55:59,324 --> 00:56:02,041
Today, farming is a science.
402
00:56:09,339 --> 00:56:13,081
This is an immense
high-tech greenhouse.
403
00:56:15,419 --> 00:56:19,281
Ten acres of tomatoes under one roof.
404
00:56:21,595 --> 00:56:23,603
I'm here as well,
405
00:56:23,643 --> 00:56:26,458
and the humans
cater to my every need.
406
00:56:29,244 --> 00:56:31,665
People have engineered ways
to grow tomatoes
407
00:56:31,708 --> 00:56:33,977
without even using soil.
408
00:56:38,299 --> 00:56:42,074
Nutrient-rich water recycles constantly.
409
00:56:42,107 --> 00:56:46,068
No pollution, no wasted water.
410
00:56:46,108 --> 00:56:48,955
This operation produces one in six
411
00:56:48,988 --> 00:56:52,370
of all the supermarket tomatoes
in the United States.
412
00:56:56,059 --> 00:56:59,507
Yet, despite many tries,
413
00:56:59,548 --> 00:57:02,963
humans have been unable to come up
with a pollination method
414
00:57:03,003 --> 00:57:07,226
as effective as the one engineered
by nature.
415
00:57:10,683 --> 00:57:14,480
The entire operation
and millions of dollars a year
416
00:57:14,523 --> 00:57:18,451
depend on ever-reliable bumblebees.
417
00:57:58,620 --> 00:58:00,310
An important food of humanity
418
00:58:00,347 --> 00:58:02,998
would not be grown
and distributed worldwide
419
00:58:03,291 --> 00:58:06,041
but for an ancient partnership
420
00:58:07,004 --> 00:58:10,167
between a bee and a flower.
421
00:58:16,539 --> 00:58:19,605
To me, all pollinators are important,
422
00:58:20,923 --> 00:58:25,113
but to people,
one is more critical than any other.
423
00:58:27,739 --> 00:58:32,408
So critical that they carry them around
as precious cargo.
424
00:58:33,659 --> 00:58:37,172
In many parts of the world,
honeybees are so vital
425
00:58:37,211 --> 00:58:40,146
that hives are shipped
thousands of miles
426
00:58:40,187 --> 00:58:42,129
from one kind of farm to another.
427
00:58:44,507 --> 00:58:47,409
Travel can subject them to stress,
428
00:58:47,451 --> 00:58:51,859
Poor diets, new parasites,
pesticides and diseases.
429
00:58:54,875 --> 00:58:59,098
But many kinds of farms
would fail without honeybees,
430
00:58:59,131 --> 00:59:02,033
such as this almond orchard
in California.
431
00:59:36,731 --> 00:59:40,473
Honeybees tend to harass an invader
who opens their hive.
432
00:59:43,035 --> 00:59:45,140
But smoke has a calming effect.
433
01:00:07,931 --> 01:00:11,640
The champion of all pollinators
is ready to go to work.
434
01:00:13,339 --> 01:00:16,787
Nearly 200 million bees
reaching every flower
435
01:00:16,827 --> 01:00:19,860
in 1,700 acres of almond trees.
436
01:00:37,691 --> 01:00:40,506
They return
with loads of almond pollen
437
01:00:40,539 --> 01:00:42,710
packed on their hind legs.
438
01:00:44,923 --> 01:00:48,119
The foragers share almond nectar
with the other bees.
439
01:00:50,107 --> 01:00:54,264
This protein-rich pollen
will feed their developing youngsters.
440
01:01:16,635 --> 01:01:18,839
A returning scout
directs her companions
441
01:01:18,875 --> 01:01:20,697
to flowers she's discovered
442
01:01:20,891 --> 01:01:23,738
using a complex way
of communicating.
443
01:01:25,979 --> 01:01:30,649
As she walks and shakes her body
in what's called a "waggle dance",
444
01:01:30,683 --> 01:01:33,651
she indicates the distance
to the flowers
445
01:01:33,691 --> 01:01:37,466
and the direction to take
according to the angle of the sun.
446
01:02:12,955 --> 01:02:13,937
Across Earth,
447
01:02:14,779 --> 01:02:17,430
pollination by honeybees is essential
448
01:02:17,467 --> 01:02:21,940
to more than 1,400 crops
people depend on.
449
01:02:35,835 --> 01:02:40,341
Without bees,
none of these foods could exist.
450
01:02:59,483 --> 01:03:02,778
People forget
that life begins with plants.
451
01:03:08,699 --> 01:03:12,693
We not only provide shelter
and medicine,
452
01:03:12,731 --> 01:03:15,731
but we're living solar collectors.
453
01:03:15,771 --> 01:03:20,757
The only life forms that can convert
sunlight into stored energy,
454
01:03:22,203 --> 01:03:27,570
producing fuel and food,
and supporting the entire web of life.
455
01:03:36,891 --> 01:03:39,925
Weeks have passed in the orchard.
456
01:03:41,339 --> 01:03:45,300
Pollination has led
to the growth of young almonds.
457
01:03:57,691 --> 01:04:00,986
But there is an ominous sign.
458
01:04:01,019 --> 01:04:04,499
Most of the honeybees in the hive
have disappeared.
459
01:04:04,538 --> 01:04:05,913
In recent years,
460
01:04:05,947 --> 01:04:09,330
some honeybee populations
have plummeted.
461
01:04:09,371 --> 01:04:13,200
The causes could range
from diseases and parasites
462
01:04:13,243 --> 01:04:16,854
to a phenomenon
in which hives seem normal,
463
01:04:16,891 --> 01:04:19,444
filled with honey
and developing young,
464
01:04:19,483 --> 01:04:22,069
but the adult bees never return.
465
01:04:22,843 --> 01:04:27,632
Are the missing bees a warning
of a greater collapse to come?
466
01:04:34,171 --> 01:04:37,968
Some human activities
threaten pollinators.
467
01:04:41,659 --> 01:04:46,809
Farming practices can poison them
and kill flowers such as milkweed.
468
01:04:48,731 --> 01:04:52,560
Wild areas needed by pollinators
are often cleared.
469
01:05:06,938 --> 01:05:09,142
Or they're covered by houses.
470
01:05:13,595 --> 01:05:15,002
Or roads.
471
01:05:17,050 --> 01:05:18,098
And across the Earth,
472
01:05:18,907 --> 01:05:22,136
pollinators are diminishing.
473
01:05:25,403 --> 01:05:29,778
Every third bite humans take
is dependent on pollinators.
474
01:05:32,987 --> 01:05:35,834
And if they continue to decline,
475
01:05:36,187 --> 01:05:38,129
life may reach a tipping point.
476
01:05:50,171 --> 01:05:56,084
The pollination scheme that knits
Together the fabric of life could unravel.
477
01:06:08,795 --> 01:06:11,096
But there are solutions.
478
01:06:16,155 --> 01:06:21,392
One of the most important
is to restore lost flower habitats.
479
01:06:21,978 --> 01:06:26,004
Where human construction
eliminates wildflowers,
480
01:06:26,043 --> 01:06:28,978
human ingenuity can replace them.
481
01:06:32,603 --> 01:06:35,898
I can flourish even on a rooftop.
482
01:06:39,323 --> 01:06:43,217
The love stories of pollination
can unfold
483
01:06:43,259 --> 01:06:47,449
in the millions of unused acres
bordering the world's highways.
484
01:06:52,987 --> 01:06:57,046
In the past, farmland left bare
has been planted with grasses.
485
01:07:00,091 --> 01:07:06,321
But farmers increasingly turn it into
Wildflower fields to help pollinators.
486
01:07:10,747 --> 01:07:15,154
People can turn a backyard
into a productive flower habitat.
487
01:07:30,586 --> 01:07:33,586
Neighbors are planting vacant lots
with flowers
488
01:07:35,259 --> 01:07:38,041
and teaching their children
to grow their own vegetables.
489
01:07:51,803 --> 01:07:55,119
Even a six-story building
can support pollinators.
490
01:08:03,290 --> 01:08:06,454
Children who learn
the value of pollination
491
01:08:06,491 --> 01:08:08,912
represent hope for the future.
492
01:08:13,819 --> 01:08:15,346
The lawn of the past
493
01:08:15,387 --> 01:08:18,583
can become a yard
filled with flowers and vegetables.
494
01:08:30,010 --> 01:08:32,345
Humans simply need to remember
495
01:08:32,634 --> 01:08:35,983
how intimately their lives
are connected with
496
01:08:36,026 --> 01:08:38,994
and dependent upon flowers.
497
01:08:42,906 --> 01:08:45,525
People use us to express love.
498
01:08:48,283 --> 01:08:49,559
To honor loved ones.
499
01:08:56,955 --> 01:09:00,784
To enrich the great emotional moments
of their lives.
500
01:09:05,755 --> 01:09:08,122
They give flowers to congratulate.
501
01:09:12,666 --> 01:09:15,569
To mark every milestone in life.
502
01:09:21,275 --> 01:09:25,431
They surround themselves with flowers
to bring color to their lives.
503
01:09:28,795 --> 01:09:32,951
We flowers are grown
and sold by the billions.
504
01:09:37,403 --> 01:09:38,483
In the process,
505
01:09:38,522 --> 01:09:41,392
people have become
one of our most important pollinators.
506
01:09:45,787 --> 01:09:49,616
Like other pollinators,
they feed on our rewards,
507
01:09:50,683 --> 01:09:54,163
and they even use our perfumes
to kindle their own romance.
508
01:09:55,579 --> 01:10:00,313
To people, flowers
are the universal symbol of love.
509
01:10:02,074 --> 01:10:05,074
After all,
we embody the ultimate love story.
510
01:10:06,939 --> 01:10:09,906
A love story that feeds the Earth.
511
01:10:11,834 --> 01:10:15,413
Day after day,
as flowers lift the human spirit,
512
01:10:16,347 --> 01:10:21,104
in hidden corners of the world
beyond the view of people,
513
01:10:21,147 --> 01:10:24,921
bees are helping plants
produce the world's food.
514
01:10:25,947 --> 01:10:30,257
Hummingbirds are helping to spread
tomorrow's flowers through the forest.
515
01:10:31,803 --> 01:10:35,545
Bats are dispersing life
through the vast desert.
516
01:10:37,883 --> 01:10:41,527
And butterflies are making
exhausting flights,
517
01:10:41,563 --> 01:10:43,221
including the monarchs,
518
01:10:43,258 --> 01:10:48,376
now setting out on a marathon journey
of 2,000 miles back to Mexico.
519
01:10:50,459 --> 01:10:55,063
Everywhere,
pollinators are working tirelessly
520
01:10:55,099 --> 01:10:58,295
to keep
the vast machinery of life running.
521
01:11:07,000 --> 01:11:12,000
Ripped By Itzik Gur
42713
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