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For as long as humans
have existed on Earth,
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00:00:43,626 --> 00:00:45,542
we have looked to the heavens in wonder.
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00:00:47,459 --> 00:00:50,792
Fascinated by the countless stars
in the night sky.
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00:01:04,292 --> 00:01:07,501
But in all the unimaginable
vastness of space,
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we found only one place like this.
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00:01:18,292 --> 00:01:21,876
It's a small blue planet,
with a rocky moon.
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00:01:22,709 --> 00:01:24,376
Travelling around a star.
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00:01:35,709 --> 00:01:38,417
It's just close enough
to be fed by its sun's energy,
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but not blasted by its heat.
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00:01:46,542 --> 00:01:48,167
It spins on its axis,
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so that for half a day
its surface basks in light,
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00:01:53,001 --> 00:01:55,667
then for half it cools in shade.
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00:02:09,209 --> 00:02:11,626
You might say, it's the lucky planet.
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00:02:13,084 --> 00:02:15,042
Because its rhythm of light and shade,
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00:02:15,501 --> 00:02:19,417
turns out to be a vital ingredient,
for life itself.
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00:02:53,417 --> 00:02:55,709
Earth, our home.
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00:02:57,292 --> 00:03:00,667
As far as we know, our planet is unique.
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00:03:01,917 --> 00:03:03,251
As far as we know,
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00:03:03,667 --> 00:03:08,834
one day spent here is the most
amazing thing in the whole universe.
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00:03:44,459 --> 00:03:46,626
The magical dance of Earth and Sun,
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has created millions of different kinds
of plants and animals,
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alive on our Earth today.
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Some, you see every day.
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00:04:00,501 --> 00:04:02,709
Others, are very rare.
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00:04:09,667 --> 00:04:11,917
But, we all have one thing in common.
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00:04:15,584 --> 00:04:19,584
Our lives are driven
by the rhythm of night and day.
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00:04:23,501 --> 00:04:25,501
One hint of morning sunlight...
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00:04:26,376 --> 00:04:28,917
And we respond in so many different ways.
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Some animals need it.
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00:05:09,417 --> 00:05:11,001
Others, hide from it.
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Most of us, love it.
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Some, even greet it with song.
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Whatever way we choose to meet it,
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sunrise is the power
that brings our world to life.
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Africa.
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00:06:39,376 --> 00:06:43,667
Here, the first hours of the day belong
not just to those who rise early,
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but to those who stayed up late.
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This serval has been hunting
during the night.
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00:07:26,917 --> 00:07:28,751
But now he's pushing his luck.
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He's out late,
trying for a final mouthful.
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00:07:40,959 --> 00:07:42,709
His high jumping technique is perfect,
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for hunting amongst the long grass
of the African savanna.
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00:07:49,334 --> 00:07:53,751
He's looking for prey,
but mostly listening for it.
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00:07:58,292 --> 00:08:01,334
His enormous radar ears
can hear a pin drop.
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00:08:08,376 --> 00:08:11,376
Or a careless step
from a southern vlei rat.
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00:08:35,334 --> 00:08:38,709
Now the sunlight's growing stronger,
maybe it's time for bed.
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On the other side of the world,
on an isolated group of Pacific islands,
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there are animals who can't even think
about running around so early in the day.
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They can't do anything until they've
been warmed up by the Sun's power.
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00:09:24,959 --> 00:09:29,334
The Galapagos islands are home for some
of the most unusual animals on Earth.
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00:09:31,876 --> 00:09:33,042
Marine iguana.
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Their morning ritual is always the same.
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As the sun comes up on their island home,
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they simply sprawl on the rocks,
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lapping it up.
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Reptiles are pretty much solar-powered.
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00:10:06,251 --> 00:10:09,042
They need the sun's heat,
before they can move a muscle.
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00:10:28,001 --> 00:10:30,417
And they're not the only creatures
soaking up the sun.
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Galapagos racer snakes aren't big enough
to trouble an adult iguana.
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00:10:45,084 --> 00:10:47,167
But, something smaller?
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00:10:59,001 --> 00:11:03,251
Away from the rocks where grown-ups live,
buried in the sand,
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baby iguanas have been incubating
underground...
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for over three months.
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Today when the Sun has warmed the sand,
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they will emerge.
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00:11:27,751 --> 00:11:31,917
It's time for this one,
to crawl out into the rest of life.
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If she starts too early,
before she's warm enough,
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she won't have the energy
to run very fast.
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If she leaves too late,
then her enemies may be supercharged.
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It's the biggest decision
she'll ever make.
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She made it.
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00:12:42,792 --> 00:12:44,459
The snakes missed their chance.
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00:12:52,042 --> 00:12:53,709
But more babies are hatching.
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00:12:55,584 --> 00:12:57,626
And now the snakes are on alert.
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It's the best opportunity
they will get to eat all year.
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00:13:29,792 --> 00:13:33,584
On flat ground a baby iguana
can outrun a racer snake.
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But, others are waiting in ambush.
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00:14:08,084 --> 00:14:12,251
Another hatchling has his first glimpse
of a dangerous world.
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The snake's eyes aren't very good,
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00:15:13,167 --> 00:15:14,917
but they can detect movement.
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00:15:19,917 --> 00:15:24,001
So, if the hatchling keeps its nerve,
it may just be okay.
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00:16:32,459 --> 00:16:34,001
An amazing escape.
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00:16:35,709 --> 00:16:38,501
The biggest achievement
of any young animal's life.
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Powered by our local star.
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Mid-morning.
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00:16:58,834 --> 00:17:02,292
As the Sun climbs higher,
its rays reach further.
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00:17:04,584 --> 00:17:06,917
Bringing magic wherever they touch.
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00:17:28,751 --> 00:17:31,084
Plants turn the light into life.
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00:17:34,001 --> 00:17:40,042
They take thin air and the Sun's energy
and with photosynthesis make new growth.
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00:17:41,792 --> 00:17:47,417
Conjuring up tangled forest worlds,
leaf by leaf.
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00:18:09,501 --> 00:18:12,667
It's the alchemy upon which
everything else on Earth depends.
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A matter of life,
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and death.
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00:18:43,084 --> 00:18:46,542
One plant can weave
its particular spell in a single day.
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This is bamboo.
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It can grow almost a millimetre a minute.
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The fastest growing plant in the world.
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00:19:13,876 --> 00:19:15,292
It's still only mid-morning.
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Most of this has grown since dawn.
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00:19:28,292 --> 00:19:32,751
And since dawn,
this giant panda has been eating it.
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00:19:38,167 --> 00:19:42,042
The trouble with bamboo,
is that it's not very nutritious.
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The trouble with pandas,
is that they're very fussy.
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Bamboo is almost
the only thing they'll eat.
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00:19:57,917 --> 00:19:59,959
To get enough energy to feed herself,
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00:20:00,251 --> 00:20:03,376
this panda will need
to eat up to 14 hours today.
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00:20:05,376 --> 00:20:08,084
Longer probably, because she's nursing.
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00:20:11,834 --> 00:20:13,917
But for her cub, it's different.
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00:20:16,167 --> 00:20:21,709
She lives mostly on her mother's milk,
so chewing is only really her hobby.
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Not yet a full-time job.
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This morning, she has something
rare in the natural world.
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Time to spare.
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00:21:04,001 --> 00:21:05,751
And, to explore.
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00:21:53,834 --> 00:21:56,292
Because of their specialised way of life,
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giant pandas are amongst
the rarest animals in the world.
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Cubs like her are more precious still.
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There are only a few hundred alive.
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A rare animal with the rarest luxury.
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Time.
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As the morning sun grows in strength,
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it begins to brew a spell
of a different kind.
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00:22:56,417 --> 00:23:01,376
The Sun is pouring energy
into our atmosphere, heating it up.
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00:23:05,376 --> 00:23:07,709
It evaporates water from land and sea,
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00:23:09,626 --> 00:23:11,501
and builds clouds.
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00:23:37,751 --> 00:23:41,709
Across Africa, clouds and weather
are constantly on the move,
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bringing rain and fresh grass
to different places at different times.
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00:23:52,417 --> 00:23:56,417
For millions of animals,
the job of every morning is to move
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to where the rain
will make the grass grow next.
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00:24:03,126 --> 00:24:04,917
Whatever stands in their way.
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00:24:12,834 --> 00:24:14,042
This morning,
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the need to keep moving will present a
particular challenge for one young zebra.
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This foal could walk
less than an hour after birth.
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She can handle almost anything.
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But she's never faced
an obstacle like this.
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00:24:51,542 --> 00:24:56,209
Swollen by highland rain,
the river is fast and furious.
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00:25:00,459 --> 00:25:01,876
And full of dangers.
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The young zebra is going to need
every bit of her mother's help,
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if she's going to make it.
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00:26:50,709 --> 00:26:54,209
It turns out the biggest threat
isn't attack by other animals,
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it's the river itself.
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Her mother tries to lead the foal
to the shallowest waters,
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but she's just too small.
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And the current's just too strong.
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The foal is on the verge of exhaustion,
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but her mother will not give up.
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While others are escaping,
she calls for her foal to keep going.
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00:28:18,209 --> 00:28:20,917
And finally, a way out.
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00:28:29,834 --> 00:28:34,876
There is a saying in Africa,
"If you wanna go quickly, go alone.
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If you wanna go far, go together."
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After this,
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the zebra foal and her mother can surely
handle anything the day throws at them.
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00:29:09,459 --> 00:29:12,459
The Sun is approaching
its highest and most powerful.
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00:29:21,167 --> 00:29:23,584
In the far north, in the Arctic,
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ice has held land and ocean
in its grip for months.
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The Sun near the poles is always lower
and weaker than anywhere else.
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But still, its energy will transform.
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Narwhal.
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One of the most mysterious
animals on the planet.
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For the moment they can't travel far,
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only small openings in the ice
allow them to surface and breathe.
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But the power of the Sun
is coming to their rescue.
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For many days
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the Sun's heat has been gnawing away
at the ice's hold on sea and land.
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Now, approaching its highest
and strongest, the Sun begins to triumph.
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And the battle of heat against cold,
becomes a rout.
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On land, rivers flow again.
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In the oceans, where the ice is now weak,
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the Sun's warmth, opens cracks.
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And the cracks become channels.
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Roadways along, which the narwhal
can traverse their icy kingdom.
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00:32:45,292 --> 00:32:49,042
In Inuit legend, the first narwhal
was a brave female hunter.
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Caught up in a deadly embrace
with a whale she hunted,
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Her braided hair flung out,
becoming the twisted tusk.
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For these narwhal, what an amazing day.
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They are free again,
to roam their ocean home.
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The strength of the Sun becomes greater
and greater, the further south you go.
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In the mountains of North America,
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the sunlight of a spring day,
brings the freshly thawed world to life.
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If you're still wearing your winter coat,
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the heat during the middle-of-the-day
can get a bit uncomfortable.
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You need to find a tree
and give yourself a good scratch.
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00:35:06,834 --> 00:35:09,917
Rubbing against the bark
not only gets to the itch,
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it helps a hot bear shed its winter fur.
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It's also a chance to mark the territory
with your personal scent.
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So everyone knows exactly who's in town.
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It's now midday,
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and the world feels the full force
of our friendly neighbourhood star.
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The sun is now at its highest in the sky.
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Its light penetrates even
the deep hidden folds of the Earth.
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In Africa, near the equator,
its energy creates a furnace.
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This zebra foal and her herd
still need to move on.
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00:37:36,667 --> 00:37:39,292
But every step is tough in heat like this.
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Any scrap of shade...
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is an oasis.
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In full sunlight,
the herd are easy for hunters to see.
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But there is one blessing
about the midday sun.
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It's simply too hot for lions to hunt.
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00:39:05,959 --> 00:39:08,917
There is something, however,
that doesn't take a break,
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even in the heat of the day.
199
00:39:14,001 --> 00:39:15,459
The struggle for power.
200
00:39:34,667 --> 00:39:39,584
Rivalry between males for territory
and for the attentions of females
201
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is so overpowering, it drives even
the most placid of creatures to combat.
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00:39:50,376 --> 00:39:52,251
At high noon in the desert heat,
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a young male giraffe is challenging
the resident bull for prime territory
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and the females that go with it.
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00:40:25,459 --> 00:40:28,917
At first they just push and shove,
trying to intimidate each other.
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Normally, this would be an end to it,
207
00:40:34,584 --> 00:40:39,126
but the young rival seems to think
he has a chance and attacks.
208
00:41:20,917 --> 00:41:22,209
Neither will back down.
209
00:41:46,167 --> 00:41:47,626
The old bull is down.
210
00:41:50,501 --> 00:41:52,417
He knows the final blow is coming.
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So, he ducks...
212
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and hits back.
213
00:42:26,334 --> 00:42:27,251
It is over.
214
00:42:35,751 --> 00:42:38,251
The day still belongs to the old master.
215
00:42:41,834 --> 00:42:45,084
For the loser, it's exile in the desert.
216
00:43:27,792 --> 00:43:32,709
The land and the creatures that live
on it, toast under the noonday sun.
217
00:43:39,501 --> 00:43:43,584
But one habitat remains cool, even now.
218
00:43:53,876 --> 00:43:58,084
Over the course of a single day,
even the enormous power of the Sun,
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00:43:58,167 --> 00:44:01,584
isn't strong enough to warm
the great oceans by much.
220
00:44:04,959 --> 00:44:07,584
Here, some of the largest
creatures on Earth,
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live lives as long,
and perhaps as complex, as our own.
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This is a family of sperm whales.
223
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And at its heart, a rare sight.
224
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A calf.
225
00:44:49,542 --> 00:44:52,626
Already 15ft long, she's about a year old,
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00:44:54,834 --> 00:44:56,376
and very inquisitive.
227
00:45:17,876 --> 00:45:20,917
For two or three years,
she will feed on her mother's milk.
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00:45:21,751 --> 00:45:25,542
It's so rich in fat,
it has the consistency of cottage cheese.
229
00:45:26,334 --> 00:45:29,626
So it doesn't dissolve in the sea
water as it's being gulped down.
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00:45:39,834 --> 00:45:43,417
The great whales are the biggest
predators that have ever existed,
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yet, they make
the most protective parents.
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00:45:51,917 --> 00:45:53,209
And very talkative ones,
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chatting in a language of clicks.
234
00:45:59,459 --> 00:46:01,334
They're the loudest
creatures on the planet,
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00:46:02,167 --> 00:46:05,084
capable of sounds,
far louder than a jet engine.
236
00:46:14,417 --> 00:46:17,042
But right now, it's time for silence.
237
00:46:20,626 --> 00:46:22,626
Hanging vertically,
the giants of the sea...
238
00:46:23,667 --> 00:46:24,959
take an afternoon nap.
239
00:46:39,459 --> 00:46:42,626
These whales have brains larger
than any other animal.
240
00:46:48,126 --> 00:46:51,834
Who can guess with what richness
they dream away the day.
241
00:47:49,376 --> 00:47:54,584
In the tropics, the oppressive heat
of midday lingers well into the afternoon.
242
00:47:58,042 --> 00:48:01,667
On a tiny island, off the coast of Panama,
in Central America,
243
00:48:03,126 --> 00:48:05,292
everything takes life slowly.
244
00:48:16,251 --> 00:48:18,334
A pygmy three-toed sloth.
245
00:48:22,626 --> 00:48:26,084
At his best, he is slothful.
246
00:48:33,459 --> 00:48:35,709
At this time of day,
he's pretty much comatose.
247
00:48:48,917 --> 00:48:50,959
Only one thing might rouse him.
248
00:48:55,417 --> 00:48:56,251
And it's this...
249
00:48:59,126 --> 00:49:03,959
The call of the female sloth,
out there somewhere.
250
00:49:10,084 --> 00:49:12,834
And since it's high tide,
why not take the short cut.
251
00:49:24,001 --> 00:49:26,667
The only problem is from down here,
252
00:49:27,501 --> 00:49:31,251
it's not easy to tell where
the potential mate is calling from.
253
00:50:07,626 --> 00:50:08,626
Could this be her?
254
00:50:57,334 --> 00:51:00,876
Sadly for him,
this female is not looking for a date.
255
00:51:09,084 --> 00:51:12,709
While she's nursing her cub,
she's quite happy to stay single.
256
00:51:19,834 --> 00:51:23,959
As they say, "maƱana."
There's always tomorrow.
257
00:51:46,251 --> 00:51:48,792
Though island life here moves slowly,
258
00:51:49,876 --> 00:51:53,584
the pace of the afternoon is very
different in other parts of the world.
259
00:52:23,126 --> 00:52:26,042
This is Zavodovski island in Antarctica,
260
00:52:26,584 --> 00:52:29,917
home for 1. 5 million chinstrap penguins.
261
00:52:45,209 --> 00:52:46,917
It's an extraordinary place.
262
00:52:47,501 --> 00:52:51,542
An outcrop of rock,
spewed out by the volcano at its heart.
263
00:52:58,042 --> 00:53:00,626
The oceans beat against it night and day.
264
00:53:08,209 --> 00:53:10,834
And the penguins
are caught in the crossfire.
265
00:53:17,542 --> 00:53:20,084
All day, the adult penguins
struggle against the waves
266
00:53:20,167 --> 00:53:23,167
as they journey between home
and their hunting grounds, offshore.
267
00:53:26,501 --> 00:53:28,251
It's an ordeal they can't avoid.
268
00:53:31,167 --> 00:53:32,584
Their families depend on them.
269
00:53:37,042 --> 00:53:39,501
Chinstrap penguin chicks
are completely helpless,
270
00:53:39,584 --> 00:53:42,209
without the support
of both mother and father.
271
00:53:46,584 --> 00:53:48,417
They need fresh food every day.
272
00:53:51,542 --> 00:53:53,542
And their parents take turns to fetch it.
273
00:53:57,751 --> 00:53:59,417
It means an awful lot of hunting...
274
00:54:02,084 --> 00:54:04,167
...for an awful lot of moms and dads.
275
00:54:08,626 --> 00:54:11,709
This mother has no food
left to feed her chicks.
276
00:54:14,834 --> 00:54:17,001
They now need their father to return,
277
00:54:18,626 --> 00:54:19,542
and soon.
278
00:54:30,626 --> 00:54:31,459
At mid-afternoon,
279
00:54:31,542 --> 00:54:35,667
the first wave of hunters,
who left early this morning, return.
280
00:54:39,042 --> 00:54:41,209
Amongst them is the chick's father.
281
00:54:44,376 --> 00:54:49,417
He's been fishing 50 miles offshore,
but now he's not far away.
282
00:54:55,334 --> 00:55:00,209
If getting safely into the water
was difficult, getting out is even harder.
283
00:55:25,751 --> 00:55:29,792
Tiny claws help them to get whatever
grip he can on the rough water.
284
00:56:00,376 --> 00:56:03,542
The father now has
a two mile walk to his family.
285
00:56:06,751 --> 00:56:08,959
And a stomach loaded
with food, doesn't help.
286
00:56:17,417 --> 00:56:19,834
This is the largest
penguin colony on Earth.
287
00:56:25,459 --> 00:56:28,209
But, as he makes the same
journey every other day,
288
00:56:30,834 --> 00:56:33,167
he should be able
to do it with his eyes closed.
289
00:56:36,751 --> 00:56:38,209
At least, most of the time.
290
00:56:41,751 --> 00:56:43,959
Like any commute,
it can get a little congested.
291
00:56:44,959 --> 00:56:48,626
And sometimes, it can be hard
to remember where you parked your kids.
292
00:56:53,584 --> 00:56:57,376
The mother is still waiting,
the chicks are now desperate.
293
00:57:05,001 --> 00:57:09,376
In the midst of all this deafening chorus,
he can recognise her particular cry.
294
00:57:11,459 --> 00:57:13,167
She is, literally, one in a million.
295
00:57:19,251 --> 00:57:22,792
A head bob, is the penguin's way
of saying, "Welcome home."
296
00:57:31,251 --> 00:57:32,959
Both chicks will get a meal.
297
00:57:39,376 --> 00:57:42,167
A happy end to the toughest
commute on Earth.
298
00:57:55,251 --> 00:57:58,251
Mid-afternoon
in the rainforests of Ecuador.
299
00:58:00,417 --> 00:58:02,126
The air steams in the heat.
300
00:58:10,417 --> 00:58:14,876
Here, the Sun and plants conspire
to create their own unique weather.
301
00:58:17,584 --> 00:58:19,459
And is the same practically every day.
302
00:58:25,917 --> 00:58:29,126
This afternoon,
that's going to help one of its smallest
303
00:58:29,209 --> 00:58:33,001
and most beautiful inhabitants
in a surprising way.
304
00:58:39,792 --> 00:58:43,251
The racket-tailed hummingbird
is about the size of your thumb.
305
00:58:50,417 --> 00:58:52,834
It takes a lot of energy
to look this graceful.
306
00:58:58,126 --> 00:59:01,709
That means it's living
in a perpetual state of near starvation.
307
00:59:06,459 --> 00:59:11,292
In fact, its metabolism is so fast,
it needs to fuel up on nectar,
308
00:59:11,376 --> 00:59:13,209
over a thousand times a day.
309
00:59:20,709 --> 00:59:22,459
It can't stop feeding for a moment.
310
00:59:24,334 --> 00:59:26,292
All day is a race against time.
311
00:59:55,376 --> 00:59:58,834
The racket-tail isn't the only one
hunting for nectar in the forest flowers.
312
01:00:00,209 --> 01:00:03,209
Bees are too,
and they don't like to share.
313
01:00:07,626 --> 01:00:11,459
A single bee sting,
close to the bird's heart, could be fatal.
314
01:00:36,709 --> 01:00:39,126
But time, is on the racket-tail's side.
315
01:00:41,542 --> 01:00:43,251
Rain is about to intervene.
316
01:00:47,209 --> 01:00:51,834
The heat of the afternoon sun,
has built massive thunder clouds.
317
01:00:58,584 --> 01:01:01,917
And when they can no longer
hold their burden, they break.
318
01:01:20,626 --> 01:01:23,584
Above the canopy, the rain is torrential.
319
01:01:27,501 --> 01:01:33,084
Under the shelter of layers of leaves,
the deluge is reduced to drips.
320
01:01:42,667 --> 01:01:47,334
A raindrop as big as its head,
may not be much fun for a hummingbird.
321
01:01:54,792 --> 01:01:56,917
But it's altogether too much, for a bee.
322
01:02:30,667 --> 01:02:32,876
The race to eat, continues.
323
01:02:40,834 --> 01:02:45,751
All over the world, tiny creatures
are on a mission to stock up before night.
324
01:02:52,626 --> 01:02:56,417
In a European meadow, there's a great
deal of food hidden in the plants.
325
01:02:58,167 --> 01:02:59,376
For those who can reach it.
326
01:03:13,667 --> 01:03:15,292
As the day begins to fade,
327
01:03:15,376 --> 01:03:19,251
this tiny harvest mouse,
must gather as much fuel as possible.
328
01:03:37,501 --> 01:03:39,167
Her best chance for a good dinner,
329
01:03:39,251 --> 01:03:42,792
are the seeds and fruit,
at the tips of the tallest stalks.
330
01:03:48,626 --> 01:03:52,042
But, it's the most dangerous part,
of her tiny world.
331
01:04:12,876 --> 01:04:15,501
A barn owl, is a night-time hunter.
332
01:04:25,584 --> 01:04:27,042
But this one has woken early.
333
01:04:28,876 --> 01:04:29,876
And hungry.
334
01:04:51,001 --> 01:04:54,834
The world at ground-level is bewildering
for a mouse used to the high life.
335
01:05:16,667 --> 01:05:20,126
But she can read the pattern
of the stems overhead, like a map.
336
01:05:29,667 --> 01:05:32,751
Which is just as well,
because back home...
337
01:05:34,501 --> 01:05:35,501
she's needed.
338
01:06:11,667 --> 01:06:13,459
The light is dying.
339
01:06:15,334 --> 01:06:17,334
But new life is being born.
340
01:06:33,542 --> 01:06:35,126
A mayfly emerges.
341
01:06:38,501 --> 01:06:40,251
It will live for just this day.
342
01:06:46,626 --> 01:06:49,667
Or less, if it doesn't move fast enough.
343
01:07:07,251 --> 01:07:09,292
When life is as perilous as this...
344
01:07:14,292 --> 01:07:16,376
nature finds safety in numbers.
345
01:07:20,251 --> 01:07:22,626
This hatch, on the Tisza River in Hungary,
346
01:07:23,334 --> 01:07:25,917
is one of the world's
great wildlife spectacles.
347
01:07:33,709 --> 01:07:36,251
Having spent three years
as nymphs in the river,
348
01:07:37,126 --> 01:07:41,084
up to five million of these
remarkable insects emerge together,
349
01:07:42,584 --> 01:07:44,542
on just this stretch of water alone.
350
01:07:52,626 --> 01:07:55,459
They'll never feed.
They don't even have mouths.
351
01:07:56,584 --> 01:08:02,042
Instead, as soon as they hatch,
they begin a Vast glittering mating dance.
352
01:08:16,667 --> 01:08:18,834
Every day on Earth is amazing.
353
01:08:20,084 --> 01:08:24,709
But surely the mayfly's day,
is one of the most amazing of all.
354
01:08:30,834 --> 01:08:35,417
By nightfall, they will have met,
mated, laid their eggs, and died.
355
01:08:36,626 --> 01:08:39,084
The future entrusted
to the next generation.
356
01:08:47,001 --> 01:08:51,376
Their entire adult life will be spent
in just a few hours of a single day.
357
01:09:12,501 --> 01:09:15,876
Day, is now spinning swiftly,
towards night.
358
01:09:20,876 --> 01:09:23,792
The Sun slips, ever lower in the sky.
359
01:09:28,501 --> 01:09:30,209
It is a time of great beauty...
360
01:09:31,667 --> 01:09:32,917
and grave danger.
361
01:09:40,417 --> 01:09:45,542
In the cool evening shadows,
is the best time to be a predator,
362
01:09:47,001 --> 01:09:49,042
and the worst time to be prey.
363
01:09:57,542 --> 01:10:02,251
For a zebra and her foal, this
is the most dangerous time of the day.
364
01:10:46,959 --> 01:10:49,417
A cheetah has his eye on the foal.
365
01:11:49,001 --> 01:11:52,751
Sometimes a mother's love...
366
01:11:52,834 --> 01:11:54,667
Can be a match for almost anything.
367
01:12:10,126 --> 01:12:14,292
As the day fades,
the shadow world is taking over.
368
01:12:17,959 --> 01:12:20,626
In the Changzhou mountains,
in Southwest China,
369
01:12:21,751 --> 01:12:25,042
the world is turning its face
away from its nurturing star,
370
01:12:26,126 --> 01:12:28,459
towards the chilly emptiness of space.
371
01:12:34,334 --> 01:12:38,709
Here, white-headed langurs
are taking their last meal of the day.
372
01:12:43,584 --> 01:12:45,792
They're amongst
the rarest creatures on Earth.
373
01:12:46,917 --> 01:12:48,959
Rarer, even than the giant panda.
374
01:12:54,751 --> 01:13:00,376
But when daylight disappears,
this is no place to linger.
375
01:13:23,209 --> 01:13:26,334
They are obeying an ancient
and overpowering instinct.
376
01:13:41,001 --> 01:13:45,959
With the lengthening of the shadows,
they scramble for height and refuge.
377
01:13:54,917 --> 01:13:56,709
The route is precarious.
378
01:13:57,751 --> 01:13:59,667
It's not unknown for a langur to fall,
379
01:14:01,167 --> 01:14:02,917
or baby be dropped.
380
01:14:11,959 --> 01:14:16,417
Yet, despite the risks,
the langurs never stay out after dark.
381
01:14:51,542 --> 01:14:54,834
Even the babies feel it,
and know to fear it.
382
01:14:58,417 --> 01:14:59,667
Night is coming.
383
01:15:02,209 --> 01:15:04,417
The world no longer belongs to them.
384
01:15:12,834 --> 01:15:15,751
It belongs to another set of players.
385
01:15:17,959 --> 01:15:19,709
The creatures of darkness.
386
01:16:51,251 --> 01:16:55,209
The night can turn a friend
into a deadly foe.
387
01:17:00,876 --> 01:17:02,001
During the day,
388
01:17:02,542 --> 01:17:07,667
whitetip sharks are content
to cruise gently around the reef alone.
389
01:17:16,751 --> 01:17:17,876
But when night comes,
390
01:17:19,501 --> 01:17:23,542
they're transformed
into hunters working in packs.
391
01:17:31,542 --> 01:17:33,751
In the gloom,
the shark's eyesight is poor.
392
01:17:37,417 --> 01:17:40,584
But they can smell
potential prey from far off.
393
01:17:44,501 --> 01:17:45,917
And they have another advantage.
394
01:17:46,917 --> 01:17:51,001
A sixth sense, that can pick up
the tiny electrical signals
395
01:17:51,417 --> 01:17:53,459
from the heartbeat of a frightened fish.
396
01:17:57,001 --> 01:17:58,167
And track it down.
397
01:18:04,626 --> 01:18:07,376
Even the deepest shadow,
is no hiding place.
398
01:18:57,292 --> 01:19:00,084
Darkness is not just
a time for nightmares.
399
01:19:01,917 --> 01:19:05,459
But also for dreams and wonders.
400
01:19:29,042 --> 01:19:32,792
Energy stored
from the sunlight is recycled.
401
01:19:35,167 --> 01:19:36,626
And the world lights up again.
402
01:20:01,292 --> 01:20:03,376
Some creatures use their lights for love.
403
01:20:08,542 --> 01:20:10,209
For this male click beetle,
404
01:20:10,626 --> 01:20:15,417
his glowing spots are designed
to impress and attract a mate.
405
01:20:18,667 --> 01:20:21,626
And seeing the glow from this fungus,
he thinks he's found one...
406
01:20:22,667 --> 01:20:23,667
hidden inside.
407
01:20:29,667 --> 01:20:31,834
But the fungus is playing a trick on him.
408
01:20:32,667 --> 01:20:35,251
The glow comes from the fungus itself.
409
01:20:42,251 --> 01:20:43,959
Puzzled, he searches everywhere.
410
01:20:45,751 --> 01:20:48,084
And gets covered in fungal spores.
411
01:20:53,334 --> 01:20:55,626
He'll spread them wherever he goes next.
412
01:20:56,376 --> 01:21:01,834
Not reproducing himself,
but helping reproduce the fungus instead.
413
01:21:09,501 --> 01:21:13,417
A light in the dark,
can also be a deadly trap.
414
01:21:21,334 --> 01:21:24,959
In New Zealand,
glow-worms cling to the roof of a cave.
415
01:21:27,709 --> 01:21:31,876
They shine out their strange lights
from within circles of hanging silk,
416
01:21:32,542 --> 01:21:33,792
sticky with mucus.
417
01:21:43,834 --> 01:21:46,917
Tiny flies are drawn
to the beautiful lights.
418
01:21:48,667 --> 01:21:53,459
Only to become glued
to the dangling strands and trapped.
419
01:21:55,251 --> 01:21:57,626
Later, they'll be reeled in for supper.
420
01:22:13,709 --> 01:22:16,751
And the night brings magic,
on a much grander scale.
421
01:22:24,042 --> 01:22:26,251
The sky seems to come alive.
422
01:22:49,584 --> 01:22:53,084
Even when the sun is out of sight,
it makes its presence felt.
423
01:22:57,084 --> 01:23:01,126
Its electrical energy powers a firework
display that lights up the planet.
424
01:23:05,542 --> 01:23:06,542
The Aurora.
425
01:23:34,334 --> 01:23:36,251
And there is another light show on Earth.
426
01:23:38,042 --> 01:23:39,542
One powered by us.
427
01:23:45,459 --> 01:23:47,584
We no longer have to wait for sunrise.
428
01:23:49,626 --> 01:23:52,042
We no longer
need to be afraid of the dark.
429
01:23:54,376 --> 01:23:57,834
In our cities, we've created
an endless electrical daylight of our own.
430
01:24:10,876 --> 01:24:13,501
We've broken away
from the rhythm of night and day.
431
01:24:24,667 --> 01:24:26,626
As more and more of us live this way,
432
01:24:26,709 --> 01:24:30,501
it's easy for us to forget
our connexion to the natural world.
433
01:24:32,084 --> 01:24:33,917
Even, when it's on our doorstep.
434
01:24:53,042 --> 01:24:57,126
These raccoons in Toronto
seem just as home in the city, as we are.
435
01:25:27,709 --> 01:25:30,334
Not all creatures can adapt
so easily to our world.
436
01:25:32,417 --> 01:25:34,334
But we humans can do something to help.
437
01:25:36,626 --> 01:25:40,334
We have the ability to appreciate
what no other animal on Earth can.
438
01:25:43,334 --> 01:25:47,751
If we open our eyes,
we can see the magic all around us.
439
01:25:49,917 --> 01:25:52,417
The extraordinary in the everyday.
440
01:26:03,626 --> 01:26:07,917
We can see the fragile web
that connects us with all living things.
441
01:26:11,001 --> 01:26:13,751
And understand that the future
of all life...
442
01:26:14,709 --> 01:26:16,042
lies in our hands.
443
01:26:36,376 --> 01:26:39,334
We have searched
the far reaches of space for wonders.
444
01:26:42,667 --> 01:26:46,959
But instead, we found the most wonderful
things of all, back home.
445
01:26:50,126 --> 01:26:52,251
Here, on our lucky planet.
446
01:26:54,084 --> 01:26:57,917
Small and blue,
spinning in an ocean of stars.
447
01:27:08,792 --> 01:27:10,959
In the whole universe, as far as we know,
448
01:27:12,709 --> 01:27:14,501
there's nowhere else with life.
449
01:27:15,876 --> 01:27:17,251
Nothing more extraordinary...
450
01:27:18,584 --> 01:27:19,626
than planet Earth.
451
01:27:21,334 --> 01:27:24,709
Nothing more important to protect
than our one and only home.
452
01:27:26,834 --> 01:27:32,542
And nothing more amazing
than what happens here, day after day.
37843
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