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Welcome to North America.
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The most diverse
continent on Earth.
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The only place where you can find
every landscape, from polar ice cap...
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00:00:33,783 --> 00:00:37,579
to baking desert, and
everything in between.
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00:00:39,998 --> 00:00:44,627
Whatever the neighborhood, there's
a hero who can make it a home.
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00:00:51,509 --> 00:00:56,598
Smart, tough,
brave, you name it.
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00:00:57,474 --> 00:00:59,350
They all have what
it takes to thrive...
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in the wildest, most
beautiful continent on Earth.
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00:01:07,025 --> 00:01:11,696
Patchwork quilt of life
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00:01:12,322 --> 00:01:16,826
Wildness never dies
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00:01:17,619 --> 00:01:22,165
Beauty always thrives
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00:01:22,916 --> 00:01:28,505
Under these spacious skies
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00:01:40,141 --> 00:01:45,855
The American Southwest,
from Texas to California,
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is a spectacular world
of desert and rock.
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00:01:56,658 --> 00:02:00,120
An arid wonderland where
water, when it comes,
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00:02:00,703 --> 00:02:03,873
shapes the land and the
lives of all that live here.
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00:02:16,761 --> 00:02:18,304
The Grand Canyon.
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00:02:19,514 --> 00:02:24,060
Three hundred miles long
and 6,000 feet deep.
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00:02:27,272 --> 00:02:31,943
An inaccessible place that's
pretty good at keeping secrets.
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00:02:35,613 --> 00:02:40,201
That's why the animal that rules this
world has been shrouded in mystery...
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until now.
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00:02:51,880 --> 00:02:53,006
A mountain lion.
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00:02:57,427 --> 00:03:00,638
Filmed in the Grand Canyon
for the very first time.
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00:03:03,141 --> 00:03:04,851
Two hundred pounds of muscle.
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00:03:09,230 --> 00:03:12,233
He's on a quest to
keep out rivals...
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00:03:15,862 --> 00:03:19,449
and father the next generation
of big cats in his kingdom.
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00:03:21,743 --> 00:03:25,538
But his success, and
that of all life here,
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00:03:27,207 --> 00:03:31,336
will ultimately depend
on events 500 miles away,
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00:03:32,879 --> 00:03:36,090
where the Southwest desert
meets the Pacific Ocean.
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00:03:42,180 --> 00:03:47,185
It's springtime, and off the
coast of Baja California,
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a new life is just beginning.
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A baby gray whale.
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00:04:07,664 --> 00:04:10,959
Birthweight, a
healthy 2000 pounds.
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00:04:15,672 --> 00:04:18,716
This proud mom travelled
for months without food
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00:04:19,259 --> 00:04:22,095
to give birth in this
sheltered lagoon...
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00:04:24,639 --> 00:04:26,599
a safe haven from predators.
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Now, she's building a bond with her son
and feeding him 50-percent-fat milk.
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00:04:40,113 --> 00:04:43,491
One problem, though. There's
no food here for Mom.
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00:04:46,828 --> 00:04:50,540
So she's about to lead her
calf, just eight weeks old,
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00:04:50,790 --> 00:04:54,043
on the longest mammal
migration on Earth.
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00:04:57,964 --> 00:04:59,299
But they're not alone.
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00:05:03,177 --> 00:05:06,389
Ninety-nine percent of the
world gray whale population
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sets off from here each year,
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00:05:10,184 --> 00:05:13,855
to swim 6,000 miles back to
their Arctic feeding grounds.
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00:05:17,859 --> 00:05:21,321
The calf has been putting
on 200 pounds a day.
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He's raring to go.
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00:05:48,056 --> 00:05:51,434
Only Mom knows the
challenges that lie ahead
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00:05:52,727 --> 00:05:56,022
as they journey the length of
our continent's West Coast.
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00:05:58,941 --> 00:06:01,277
This is truly America's whale.
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00:06:08,910 --> 00:06:12,830
All along this coastline,
the Pacific is a life-giver.
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00:06:17,502 --> 00:06:22,507
Off California, the sun's heat
draws water from the cold ocean...
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00:06:26,344 --> 00:06:30,598
creating a fog bank, which
blows inland on the sea breeze.
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00:06:38,940 --> 00:06:43,027
This coastline is bathed
in fog for 60 days a year,
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00:06:45,154 --> 00:06:48,950
providing much of the water
for the world's tallest trees.
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00:06:54,330 --> 00:06:56,916
Three-hundred-foot
coastal redwoods
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00:06:57,250 --> 00:06:59,168
drink the droplets
through their leaves.
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00:07:05,258 --> 00:07:08,386
The fog also supports
less-celebrated trees.
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00:07:14,809 --> 00:07:18,354
This oak is the storehouse for
a family of acorn woodpeckers.
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00:07:26,737 --> 00:07:28,573
They live to stash acorns.
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00:07:31,159 --> 00:07:33,703
All day, every day.
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00:07:40,209 --> 00:07:44,297
Almost to the point
of... obsession?
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00:07:49,135 --> 00:07:53,598
But 50,000 acorns stored
in the bark of one oak?
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00:07:54,724 --> 00:07:56,559
That's bound to attract thieves.
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00:08:09,739 --> 00:08:12,408
One woodpecker is
always on lookout.
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00:08:49,195 --> 00:08:50,738
Looks like a win
for the squirrels.
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00:08:56,160 --> 00:08:58,037
But the lookout's
called in backup.
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00:09:16,097 --> 00:09:19,642
By working together, they
keep their stash safe.
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00:09:21,978 --> 00:09:23,396
But not for long.
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00:09:36,033 --> 00:09:38,160
This thief has his
own power tools
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00:09:38,953 --> 00:09:40,663
to break into the family vault.
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00:09:50,381 --> 00:09:53,634
Even the most committed
teamwork is no defense
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00:09:53,718 --> 00:09:56,345
against a raider a
thousand times your size.
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00:10:00,474 --> 00:10:04,562
All that hard work,
undone in minutes.
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00:10:09,442 --> 00:10:13,029
These hoarding heroes don't let
a little setback get them down.
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00:10:14,864 --> 00:10:17,700
The new collection
begins straightaway.
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00:10:24,165 --> 00:10:27,668
The woodpeckers' oak is
watered by Pacific fog.
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00:10:29,503 --> 00:10:33,382
Travel away from the coast, and
that water supply evaporates.
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00:10:38,512 --> 00:10:40,264
A hundred and
fifty miles inland,
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00:10:40,806 --> 00:10:44,393
the Sierra Nevada Mountains
capture the Pacific clouds.
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00:10:55,655 --> 00:11:00,034
These mountains are a wall,
up to 14,000 feet high,
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00:11:00,534 --> 00:11:02,912
blocking water from
blowing further inland.
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00:11:13,964 --> 00:11:17,009
Beyond is the
ultimate desert world.
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The hottest place on Earth.
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Death Valley.
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00:11:34,568 --> 00:11:37,738
Here, the summer temperature
can reach 130 degrees.
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00:11:42,326 --> 00:11:44,912
Even in spring, it
can top a hundred.
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00:11:54,964 --> 00:11:59,427
So, how do you survive in this
land hardly ever reached by rain?
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One tiny desert dweller has a solution
straight out of a science fiction movie.
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00:12:12,898 --> 00:12:14,608
Ten feet underground,
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where it's an ideal
temperature year-round.
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00:12:22,616 --> 00:12:24,577
A bizarre insect society.
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These are honeypot ants.
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00:12:38,883 --> 00:12:44,847
Some members of the species only
exist to store food for others.
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00:12:59,111 --> 00:13:02,281
The worker ants gather flower
nectar in times of plenty
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00:13:03,365 --> 00:13:04,909
and feed it to others,
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00:13:05,743 --> 00:13:07,286
who never leave the colony.
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00:13:16,212 --> 00:13:20,633
Their abdomens swell to the size
of a cherry with sweet nectar.
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00:13:21,759 --> 00:13:25,221
It's the colony's insurance
policy against hard times.
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00:13:34,355 --> 00:13:36,524
Now, the precious
honeypots are full
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00:13:36,899 --> 00:13:38,651
and kept clean by their comrades
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00:13:38,818 --> 00:13:39,860
to keep 'em healthy.
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00:13:45,324 --> 00:13:49,286
But in this corner of Death Valley,
the driest place in North America,
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it hasn't rained all winter.
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00:13:56,252 --> 00:13:57,962
If this drought
goes on much longer,
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00:13:58,712 --> 00:14:02,424
these desert survivalists
will need a plan B.
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00:14:21,360 --> 00:14:23,445
Two hundred and fifty
miles further inland,
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the Colorado River carves through
the high desert of Arizona
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to form the Grand Canyon.
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00:14:53,559 --> 00:14:56,103
This spring morning brings
a first-ever glimpse
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into the private life of the
Canyon's most elusive resident.
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00:15:02,818 --> 00:15:05,446
Our mountain lion is
on a mission to breed.
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00:15:09,116 --> 00:15:11,994
Like all male mountain
lions, he's a loner.
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00:15:13,996 --> 00:15:18,375
His scarred face shows he'll fight to
keep rival males out of his kingdom.
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00:15:27,176 --> 00:15:29,970
But his biggest battle
is finding a female.
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00:15:33,807 --> 00:15:37,478
There's only a handful in a hundred
square miles of this canyon,
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00:15:38,729 --> 00:15:41,065
so he can't rely on
a chance encounter.
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He needs to advertise.
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00:15:51,992 --> 00:15:54,203
His scent mark will
last for weeks...
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a message to any passing females
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00:16:02,002 --> 00:16:04,838
that this eligible bachelor
is looking for love.
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00:16:15,975 --> 00:16:19,895
For others in the West, finding a
mate is the least of their worries.
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00:16:23,607 --> 00:16:26,151
Over 20 million
free-tailed bats,
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one of the largest gatherings
of mammals on Earth,
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00:16:30,406 --> 00:16:35,244
flock to this sheltered Texas cave
each spring to mate and have pups.
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00:16:44,670 --> 00:16:47,131
These baby bats have
to grow up fast.
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00:16:53,429 --> 00:16:55,764
Tonight, at just a month old,
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00:16:56,348 --> 00:16:59,893
this little guy will fly up to a
hundred miles in search of food...
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on his very first flight.
129
00:17:09,778 --> 00:17:12,573
As evening falls, the
bats start to leave.
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00:17:17,828 --> 00:17:21,165
They'll get more time to
feed by heading out early...
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00:17:24,585 --> 00:17:28,881
but leaving their sanctuary
in daylight is a gamble.
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00:17:37,473 --> 00:17:39,058
There's danger from above.
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A Swainson's hawk.
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00:17:54,948 --> 00:17:57,034
And even greater
danger from below.
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00:18:15,803 --> 00:18:18,680
Cactus spines snag the
inexperienced pups...
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00:18:23,977 --> 00:18:25,896
making them an easy target.
137
00:18:42,371 --> 00:18:43,539
Coachwhip snakes.
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00:18:45,541 --> 00:18:48,669
Their large eyes mark them
out as visual hunters.
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00:18:54,424 --> 00:18:58,637
Non-venomous, they rely on
dagger-sharp teeth to catch their prey.
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00:19:03,684 --> 00:19:05,519
And if a bat makes a run for it,
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00:19:05,936 --> 00:19:10,149
it stands no chance against the
fastest snake in North America.
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00:19:23,662 --> 00:19:29,126
Despite the danger, every bat
has to head out sometime...
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or starve.
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00:19:33,922 --> 00:19:36,383
What a time to take
your first-ever flight.
145
00:20:02,242 --> 00:20:04,453
His only chance is
to climb quickly
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00:20:04,745 --> 00:20:06,914
to somewhere he can re-launch.
147
00:20:20,052 --> 00:20:22,179
Sometimes, you just
need a bit of luck.
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00:20:31,480 --> 00:20:34,316
This young bat's cleared
the most dangerous hurdle
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00:20:34,399 --> 00:20:35,734
on his path to adulthood.
150
00:20:42,574 --> 00:20:48,413
Tonight, he and the rest of his
colony will devour 250 tons of insects
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00:20:48,538 --> 00:20:50,207
in the Southwest skies.
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00:21:01,468 --> 00:21:06,640
Back in the Pacific, the clock is
ticking for the gray whale mom and calf.
153
00:21:10,143 --> 00:21:13,772
They're averaging three miles an hour
on their journey up the West Coast
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00:21:14,022 --> 00:21:15,565
to the summer feeding grounds.
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00:21:22,614 --> 00:21:26,368
The beaches of Los Angeles are
an eye-opener for a baby whale.
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00:21:38,839 --> 00:21:41,383
If he can memorize
landmarks like this,
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00:21:42,009 --> 00:21:43,093
it will help him navigate
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00:21:43,176 --> 00:21:46,054
when he's old enough to make
this migration on his own.
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00:21:55,564 --> 00:21:57,024
No time to hang out, though.
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00:22:02,154 --> 00:22:07,868
Mom knows it's still a long way,
4,000 miles to the Alaskan Arctic.
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00:22:12,205 --> 00:22:15,667
Next stop, a wonder
of the American West.
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A forest of giant kelp,
growing up to 18 inches a day,
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00:22:31,683 --> 00:22:33,769
fueled by the California sun.
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00:22:36,146 --> 00:22:39,399
This is the ocean equivalent
of a tropical rainforest...
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00:22:43,195 --> 00:22:46,365
full of life at every level.
166
00:22:56,166 --> 00:22:59,294
Sea otters take it
easy in the kelp beds.
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00:23:12,849 --> 00:23:17,145
Moms can even get daycare
here, from the kelp.
168
00:23:20,774 --> 00:23:24,069
Wrapped up in weed, this
youngster won't drift away.
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00:23:26,696 --> 00:23:28,698
And Mom can go free diving.
170
00:23:36,248 --> 00:23:39,167
She can hold her breath
for up to eight minutes
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00:23:39,835 --> 00:23:41,586
while she hunts on the seabed.
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00:23:51,221 --> 00:23:54,641
Her favorite spot is the
surf zone, near the shore,
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00:23:56,726 --> 00:24:02,023
where the waves churn up nutrients,
feeding beds of shellfish.
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00:24:12,284 --> 00:24:15,036
The otters thrive on this
protein-rich superfood.
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00:24:18,415 --> 00:24:24,629
There's plenty for everyone, if
you can hold on to your catch.
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00:24:28,091 --> 00:24:30,760
The ocean supplies all
the otters' needs...
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00:24:34,681 --> 00:24:38,393
even rocks from the seafloor
to smash open mussels.
178
00:24:49,321 --> 00:24:52,491
Many sea otters spend
their entire lives at sea,
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00:24:54,367 --> 00:24:57,996
where the year-round riches are
in stark contrast to the land.
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00:25:10,091 --> 00:25:13,470
In the desert, the scorching
summer is just weeks away.
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00:25:14,763 --> 00:25:17,390
And somebody's in a
hurry to raise a family.
182
00:25:19,518 --> 00:25:25,315
A Costa's hummingbird, the
hardest-working mom in America.
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00:25:30,695 --> 00:25:34,908
She's on a mission, at
2,000 wingbeats a minute,
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00:25:35,242 --> 00:25:39,913
collecting dried grass and
spiderwebs to build a nest.
185
00:25:53,343 --> 00:25:58,598
She has just five weeks to raise a brood,
and she needs just one more ingredient...
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00:26:02,394 --> 00:26:04,229
that only a male can provide.
187
00:26:20,495 --> 00:26:24,165
The mom's short on time, but
she's still really picky.
188
00:26:29,170 --> 00:26:31,006
He sticks out his
throat feathers.
189
00:26:33,592 --> 00:26:35,427
He's throwing some great shapes.
190
00:26:39,931 --> 00:26:43,518
But she's still not sure this
thumb-sized heartthrob is the one.
191
00:26:46,563 --> 00:26:49,357
He'll have to pull out
his very best move.
192
00:26:51,985 --> 00:26:54,154
He climbs to a hundred feet...
193
00:26:59,659 --> 00:27:02,329
then dives at 60 miles per hour.
194
00:27:09,502 --> 00:27:12,547
Whistling tail feathers are
the soundtrack to his show.
195
00:27:18,345 --> 00:27:19,346
That dive...
196
00:27:21,181 --> 00:27:22,349
That face...
197
00:27:23,391 --> 00:27:25,852
Now she's sure.
198
00:27:33,652 --> 00:27:35,487
After the briefest
of encounters,
199
00:27:36,488 --> 00:27:38,740
the mom soon has eggs to lay.
200
00:27:43,495 --> 00:27:45,538
And now, the real
hard work begins.
201
00:27:48,416 --> 00:27:50,794
In the sweltering heat,
she's soon visiting
202
00:27:50,919 --> 00:27:53,838
up to 2,000 flowers a
day to feed her brood.
203
00:28:01,388 --> 00:28:03,473
Twins. Twice the work.
204
00:28:06,976 --> 00:28:10,772
Each chick started out just half
the weight of a dollar bill.
205
00:28:12,607 --> 00:28:15,985
She feeds them up on a protein
shake of insects and nectar.
206
00:28:21,199 --> 00:28:25,787
In just 21 days, they're ten times
heavier than when they hatched...
207
00:28:29,791 --> 00:28:32,293
and ready to take their
very first flight.
208
00:28:46,641 --> 00:28:48,226
Supermom has done it...
209
00:28:51,813 --> 00:28:53,982
and just before the
summer heat hits.
210
00:28:55,942 --> 00:28:58,653
Soon, they'll have to leave for
the coast, where it's cooler.
211
00:29:12,083 --> 00:29:16,296
Our gray whales have traveled
another 300 miles since leaving L.A.
212
00:29:22,302 --> 00:29:24,888
The mom now hasn't
eaten for six months.
213
00:29:28,767 --> 00:29:30,643
She's lost a fourth
of her body weight
214
00:29:30,852 --> 00:29:34,230
while feeding her calf
six gallons of milk a day.
215
00:29:37,484 --> 00:29:39,652
She needs to reach the
feeding grounds ASAP.
216
00:29:40,987 --> 00:29:43,239
And now, she faces a choice.
217
00:29:48,745 --> 00:29:52,248
Does she save energy and take
a shortcut across Monterey Bay,
218
00:29:53,583 --> 00:29:56,586
a dangerous 25-mile
stretch of open water,
219
00:29:58,797 --> 00:30:01,508
or keep on hugging
the shoreline?
220
00:30:05,678 --> 00:30:08,473
She puts the safety of
her calf above her hunger
221
00:30:08,807 --> 00:30:12,769
and stays inshore, hidden
in the kelp forest.
222
00:30:27,158 --> 00:30:29,118
Another less experienced mom
223
00:30:29,202 --> 00:30:32,622
chooses to take her calf
straight across the bay.
224
00:30:38,086 --> 00:30:41,714
The wrong call. Orcas.
225
00:30:44,425 --> 00:30:47,136
This pod comes here at
this time every year
226
00:30:47,595 --> 00:30:49,556
to hunt gray whale calves.
227
00:30:58,022 --> 00:31:00,859
The older orcas teach the
young ones how to hunt.
228
00:31:04,237 --> 00:31:07,949
First, they ram the calf
at 30 miles per hour.
229
00:31:19,419 --> 00:31:23,298
When the gray whale mom tries to
lead her wounded youngster to safety
230
00:31:23,381 --> 00:31:24,465
in the kelp forest,
231
00:31:24,674 --> 00:31:26,801
other orcas block their path.
232
00:31:30,722 --> 00:31:34,809
Working together, they drive
their prey back to deep water,
233
00:31:36,060 --> 00:31:38,897
and separate the
calf from its mother.
234
00:31:58,666 --> 00:32:04,005
Their plan has worked.
Now they drown the calf.
235
00:32:22,815 --> 00:32:24,317
It's a cruel lesson,
236
00:32:25,818 --> 00:32:29,697
but this young mother will have
other calves in years to come.
237
00:32:35,828 --> 00:32:39,874
For our more experienced mom,
sticking to the American coast
238
00:32:39,999 --> 00:32:41,793
has saved her calf's life.
239
00:32:44,420 --> 00:32:46,339
They've passed the
most dangerous test
240
00:32:46,422 --> 00:32:47,966
on their journey to Alaska...
241
00:32:52,887 --> 00:32:57,642
and they're getting out of the West just
as the toughest time of year begins.
242
00:33:04,649 --> 00:33:05,775
Summer.
243
00:33:21,165 --> 00:33:26,629
Sun beating on the bare rock turns
the Grand Canyon into an oven.
244
00:33:30,049 --> 00:33:32,343
Our mountain lion
seeks out the shade.
245
00:33:39,642 --> 00:33:41,936
Still no sign of a female...
246
00:33:45,398 --> 00:33:48,568
so he posts a new message
on the big cat dating site.
247
00:33:54,407 --> 00:33:56,034
Then he waits for evening...
248
00:34:01,122 --> 00:34:03,291
when the Canyon
animals get active.
249
00:34:13,009 --> 00:34:15,344
Deer are his favorite food...
250
00:34:16,804 --> 00:34:18,431
though he's not fussy.
251
00:34:26,439 --> 00:34:30,193
He knows every inch of his
150-square-mile kingdom.
252
00:34:35,740 --> 00:34:38,201
The Canyon rim is a
favorite hunting ground
253
00:34:38,284 --> 00:34:39,911
for this stealth hunter.
254
00:34:44,624 --> 00:34:48,044
With night vision nearly ten
times better than a human's.
255
00:34:53,549 --> 00:34:56,469
He's returning to a kill
he's made a few nights back.
256
00:35:01,933 --> 00:35:04,602
He can eat 40 pounds
of meat in a day,
257
00:35:05,144 --> 00:35:08,481
but it could still take him a
week to chow down a whole elk.
258
00:35:22,829 --> 00:35:26,541
His belly's full. He goes
to sleep off his meal.
259
00:35:28,251 --> 00:35:34,132
And while the cat's
away... thieves move in.
260
00:35:39,137 --> 00:35:42,431
Most mountain lion kills
get raided by black bears,
261
00:35:45,184 --> 00:35:48,312
just one of many that benefit
from the lion's leftovers.
262
00:35:57,530 --> 00:36:01,159
The King of the Canyon is
both predator and provider.
263
00:36:16,340 --> 00:36:19,218
July in Death Valley.
264
00:36:22,013 --> 00:36:24,390
There's been no rain
now for six months.
265
00:36:25,474 --> 00:36:28,853
Through the drought, the honeypot
ants have gradually drained
266
00:36:28,936 --> 00:36:31,564
all the nectar they'd
stored in their nestmates.
267
00:36:43,034 --> 00:36:44,702
So with nothing left to eat,
268
00:36:45,286 --> 00:36:47,872
the workers are setting
out on a raiding party.
269
00:36:50,666 --> 00:36:53,544
They must be quick. By
the middle of the day,
270
00:36:53,711 --> 00:36:56,339
the surface can hit 200 degrees.
271
00:36:59,091 --> 00:37:01,344
That's hot enough to
cook an ant in seconds.
272
00:37:08,559 --> 00:37:10,686
They find a rival
from another colony.
273
00:37:13,773 --> 00:37:19,153
They size her up and follow
her scent back to her nest.
274
00:37:30,414 --> 00:37:33,626
Here, they find ants
still full of nectar,
275
00:37:34,418 --> 00:37:38,339
black from food found on
tree roots deep underground.
276
00:37:47,723 --> 00:37:49,850
Buried treasure
worth fighting over.
277
00:38:06,993 --> 00:38:10,579
The starving invaders eat
some honeypots on the spot.
278
00:38:12,164 --> 00:38:16,252
Others, they capture and drag
back to their home colony.
279
00:38:33,561 --> 00:38:35,813
The raiders will have
to get home fast,
280
00:38:37,273 --> 00:38:40,568
because a force of nature
is building nearby.
281
00:38:48,576 --> 00:38:50,369
The thundercloud collapses
282
00:38:50,745 --> 00:38:54,957
into a monster dust
storm known as a haboob.
283
00:39:03,883 --> 00:39:08,721
Most ants make it back just before
the 60-mile-an-hour wall of sand
284
00:39:09,430 --> 00:39:11,557
takes out any
stragglers in its path.
285
00:39:29,492 --> 00:39:31,535
The entrance to
the nest is buried,
286
00:39:31,911 --> 00:39:37,124
but the stolen honeypots will ensure
the colony's survival... for now.
287
00:39:43,798 --> 00:39:49,595
By late summer, the heat and drought
across the West are almost unbearable.
288
00:39:53,808 --> 00:39:56,227
Even clouds don't signify rain.
289
00:40:02,775 --> 00:40:07,113
These are pyrocumulus,
fire clouds,
290
00:40:08,114 --> 00:40:12,910
formed by soot particles rising
high into the sky above wildfires.
291
00:40:15,621 --> 00:40:21,544
They can climb up to seven miles
high, the edge of the stratosphere.
292
00:40:35,433 --> 00:40:38,602
Hotter summer temperatures,
caused by climate change,
293
00:40:39,270 --> 00:40:43,274
are making wildfire season
increasingly extreme across the West.
294
00:40:49,447 --> 00:40:53,951
The residents of Los Angeles are all
too familiar with these infernos.
295
00:41:03,252 --> 00:41:09,800
Homes and wildlife habitat are regularly
destroyed, right up to the city limits.
296
00:41:19,185 --> 00:41:21,770
But there's an
oasis in Tinseltown.
297
00:41:26,233 --> 00:41:29,528
Griffith Park, right in
the heart of Hollywood.
298
00:41:31,489 --> 00:41:36,243
Protected from fires, these well-watered
lawns are a haven for wildlife.
299
00:41:46,170 --> 00:41:49,632
And after dark, this
park really comes alive.
300
00:41:56,639 --> 00:42:00,726
There's prey... and predators.
301
00:42:03,562 --> 00:42:07,233
Bobcat... coyote...
302
00:42:09,693 --> 00:42:13,948
and one A-list star with
an amazing backstory.
303
00:42:18,994 --> 00:42:20,746
When he found himself homeless,
304
00:42:21,914 --> 00:42:26,502
this intrepid hero made a 50-mile
trek along the Santa Monica Mountains.
305
00:42:28,754 --> 00:42:31,840
He crossed the busiest
freeway in the U.S...
306
00:42:39,932 --> 00:42:42,309
right into the
heart of the city.
307
00:42:51,277 --> 00:42:56,615
Meet P-22, the world's
most famous mountain lion.
308
00:42:58,617 --> 00:43:02,121
As there's so much prey in this
park, he thrives in a territory
309
00:43:02,288 --> 00:43:05,791
just five percent the size
of his Grand Canyon cousins'.
310
00:43:08,127 --> 00:43:11,005
His radio collar sends
scientists his location.
311
00:43:22,891 --> 00:43:27,104
In the small hours, he leaves the
park and prowls the city streets.
312
00:43:32,234 --> 00:43:35,070
If it's a mate he's
after, he's out of luck.
313
00:43:37,114 --> 00:43:39,908
There's next to no chance
another mountain lion
314
00:43:39,992 --> 00:43:42,578
will ever emulate
his amazing journey.
315
00:43:47,249 --> 00:43:51,754
But he can find something in the
city that's in very short supply.
316
00:43:55,841 --> 00:43:56,842
Water.
317
00:44:01,639 --> 00:44:05,142
In the heat of the summer, a broken
water pipe can be a lifeline.
318
00:44:18,572 --> 00:44:22,951
But for those across the parched
West without a water supply,
319
00:44:23,702 --> 00:44:26,205
hope is finally on the horizon.
320
00:44:30,876 --> 00:44:34,797
In late summer, the winds
shift over the Pacific Ocean,
321
00:44:37,758 --> 00:44:40,386
blowing rain clouds
hundreds of miles inland.
322
00:44:48,644 --> 00:44:53,482
This is the beginnings of one of the
most powerful weather systems in America.
323
00:44:55,484 --> 00:44:57,361
The American monsoon.
324
00:45:05,744 --> 00:45:09,790
For three months, torrential
downpours drench the Southwest.
325
00:45:18,215 --> 00:45:21,677
These storms can drop two
inches of rain in an hour,
326
00:45:24,471 --> 00:45:26,724
rejuvenating the barren deserts.
327
00:45:34,481 --> 00:45:37,526
This region can get up to
half its annual rainfall
328
00:45:37,609 --> 00:45:39,194
in this late-summer monsoon.
329
00:45:52,082 --> 00:45:53,792
The rain from the distant ocean
330
00:45:54,251 --> 00:45:57,546
is the secret to life
in America's deserts.
331
00:45:59,965 --> 00:46:02,050
All the way to the
top of the food chain.
332
00:46:04,511 --> 00:46:07,431
A new mountain lion
in the Grand Canyon.
333
00:46:09,183 --> 00:46:10,851
Not the scarred-face male...
334
00:46:13,729 --> 00:46:14,980
but a female.
335
00:46:16,565 --> 00:46:20,569
After the recent rain, she can
travel outside of her usual range,
336
00:46:22,780 --> 00:46:26,200
safe in the knowledge that there'll
be drinking water to be found.
337
00:46:45,052 --> 00:46:46,470
This first-ever look
338
00:46:46,553 --> 00:46:49,139
into the lives of the Grand
Canyon's mountain lions
339
00:46:50,015 --> 00:46:55,062
shows that big cats are still thriving
in this iconic American wilderness.
340
00:46:58,690 --> 00:47:00,400
A source of hope for the future.
341
00:47:10,369 --> 00:47:14,456
This female is on
her own, no cubs.
342
00:47:18,210 --> 00:47:21,630
So, quite likely, she's in
season, looking for a mate.
343
00:47:23,882 --> 00:47:26,969
She's found the scent marks
of the scarred-faced male...
344
00:47:33,016 --> 00:47:35,310
her first introduction
to a potential partner.
345
00:47:45,028 --> 00:47:48,991
And following on, just an
hour later, is the male.
346
00:47:54,288 --> 00:47:55,873
He'll soon achieve his goal,
347
00:47:56,498 --> 00:47:59,710
another generation of big
cats in his kingdom...
348
00:48:03,755 --> 00:48:07,676
true heroes of the
great American West.29247
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