1
00:00:24,441 --> 00:00:28,445
[Hiddleston] A family
of scimitar-toothed cats.

2
00:00:36,036 --> 00:00:40,624
For millennia they've thrived here
in the icy north.

3
00:00:43,752 --> 00:00:47,297
But right now, they're starving.

4
00:00:52,052 --> 00:00:56,974
The prey the cats hunt
is becoming scarce in these valleys…

5
00:01:00,143 --> 00:01:02,563
because the climate is warming,

6
00:01:03,188 --> 00:01:06,942
forcing grazing animals
to find new feeding grounds.

7
00:01:10,654 --> 00:01:13,740
Today, they might be in luck.

8
00:01:17,911 --> 00:01:21,999
A mammoth herd, trying a new route south.

9
00:01:37,931 --> 00:01:42,436
Taking on such powerful creatures
is a huge risk.

10
00:01:45,772 --> 00:01:47,691
But they don't have a choice.

11
00:01:51,403 --> 00:01:54,448
It's the end of the Ice Age.

12
00:01:56,408 --> 00:02:02,289
As the planet heats up,
every habitat on Earth is changing.

13
00:02:06,418 --> 00:02:10,964
As ice retreats,
water returns to the landscape

14
00:02:11,632 --> 00:02:14,259
and forest animals thrive.

15
00:02:19,097 --> 00:02:21,183
But the rulers of the Ice Age

16
00:02:21,266 --> 00:02:24,019
are facing the end of the world they know…

17
00:02:25,812 --> 00:02:28,273
- and struggling to survive.
- [barks]

18
00:02:29,024 --> 00:02:30,651
[hissing, growling]

19
00:02:56,468 --> 00:02:58,637
[rumbling]

20
00:03:08,689 --> 00:03:11,483
[Hiddleston] The cats make their move.

21
00:03:13,485 --> 00:03:15,404
The biggest danger?

22
00:03:15,904 --> 00:03:17,656
A huge male.

23
00:03:18,699 --> 00:03:19,867
[trumpeting]

24
00:03:23,579 --> 00:03:24,913
[trumpeting continues]

25
00:03:28,834 --> 00:03:31,253
Unpredictable and powerful.

26
00:03:33,505 --> 00:03:34,840
[snarling]

27
00:03:36,216 --> 00:03:37,467
[screeches]

28
00:03:48,937 --> 00:03:50,355
[cats snarling]

29
00:03:50,439 --> 00:03:51,690
[mammoth trumpets]

30
00:04:10,292 --> 00:04:14,922
She's injured
but these cats won't give up.

31
00:04:19,176 --> 00:04:22,346
The warming climate
has changed migration routes

32
00:04:22,429 --> 00:04:24,014
in this part of the world.

33
00:04:25,432 --> 00:04:29,937
On the coast, its effects are spectacular.

34
00:04:34,066 --> 00:04:37,736
Mineral-rich ice is falling
in huge quantities,

35
00:04:37,819 --> 00:04:41,031
filling the shallow sea with nutrients.

36
00:04:50,290 --> 00:04:56,380
This family of sea cows have come here
to feed on a forest of lush kelp

37
00:04:57,631 --> 00:04:59,758
fed by the meltwater.

38
00:05:11,144 --> 00:05:15,899
These Ice Age giants
are relatives of manatees…

39
00:05:18,443 --> 00:05:21,280
but the size of a whale.

40
00:05:27,244 --> 00:05:29,496
Kelp is their favorite food.

41
00:05:31,748 --> 00:05:35,586
But it only grows
in shallow coastal waters…

42
00:05:37,504 --> 00:05:40,966
so feeding here can be risky.

43
00:05:46,430 --> 00:05:47,556
[bird chirps]

44
00:05:48,223 --> 00:05:52,019
When the tide goes out,
strandings are common.

45
00:05:55,230 --> 00:05:58,275
Out of the water, he's too heavy to move.

46
00:05:59,818 --> 00:06:05,324
And today,
this beach is not a good place to be.

47
00:06:17,127 --> 00:06:19,296
A short-faced bear.

48
00:06:21,340 --> 00:06:24,635
500 pounds heavier than a polar bear

49
00:06:25,636 --> 00:06:28,013
and even more deadly.

50
00:06:32,267 --> 00:06:36,230
[grunting, sniffing]

51
00:06:41,860 --> 00:06:46,865
One of the biggest predators
to walk the Earth since the dinosaurs.

52
00:06:51,537 --> 00:06:53,580
[sniffing]

53
00:06:53,664 --> 00:06:55,415
He's picked up a scent.

54
00:06:55,499 --> 00:06:57,251
[birds chirping]

55
00:07:08,011 --> 00:07:10,931
- [sniffing]
- [flies buzzing]

56
00:07:14,142 --> 00:07:16,144
He's never seen anything like it.

57
00:07:20,732 --> 00:07:23,235
But it smells like food.

58
00:07:27,114 --> 00:07:29,241
It's all very confusing.

59
00:07:42,087 --> 00:07:43,297
[bellowing]

60
00:07:50,095 --> 00:07:54,600
A short-faced bear
could tear most animals to shreds.

61
00:08:00,022 --> 00:08:01,815
Luckily for the sea cow,

62
00:08:01,899 --> 00:08:06,069
he's protected by
tough skin an inch thick.

63
00:08:08,780 --> 00:08:10,449
- [sea cow rumbles]
- [bear grunts]

64
00:08:14,411 --> 00:08:18,081
The bear's attack is just an irritation.

65
00:08:21,919 --> 00:08:25,339
Or maybe, a welcome back scratch.

66
00:08:31,136 --> 00:08:33,347
The tide's coming back in.

67
00:08:35,849 --> 00:08:37,100
Fast.

68
00:08:41,063 --> 00:08:44,566
For the bear,
the chance of a meal is slipping away.

69
00:09:05,420 --> 00:09:08,465
Time to rejoin his family.

70
00:09:10,425 --> 00:09:13,762
He's got plenty of eating to catch up on.

71
00:09:22,104 --> 00:09:27,985
Here on the coast, the Big Melt means
more nutritious kelp for sea cows…

72
00:09:30,946 --> 00:09:33,866
- [growls]
- …while for many Ice Age giants

73
00:09:35,534 --> 00:09:37,953
life is getting harder.

74
00:09:45,127 --> 00:09:46,962
[owls hooting]

75
00:09:54,678 --> 00:09:58,015
For animals living thousands of miles
to the south,

76
00:09:58,807 --> 00:10:04,855
the warming climate is turning
this scrubland into a dangerous place.

77
00:10:06,565 --> 00:10:07,733
[owl hoots]

78
00:10:09,943 --> 00:10:11,778
[mammoth rumbling]

79
00:10:14,823 --> 00:10:20,162
At night, a Columbian mammoth
is safe enough feeding here.

80
00:10:29,713 --> 00:10:31,798
But once the sun comes up…

81
00:10:38,430 --> 00:10:41,600
even this giant is in danger.

82
00:11:13,757 --> 00:11:15,884
A lake of tar.

83
00:11:16,718 --> 00:11:18,470
[roars]

84
00:11:24,518 --> 00:11:28,522
It seeps to the surface
from deep within the Earth's crust.

85
00:11:30,691 --> 00:11:35,362
When cold, it's hard and safe to walk on.

86
00:11:37,281 --> 00:11:40,075
But when the temperature
reaches 64 degrees…

87
00:11:42,077 --> 00:11:45,747
it turns into a sticky death trap.

88
00:11:50,043 --> 00:11:52,838
Today it's claimed a new victim.

89
00:11:56,508 --> 00:11:57,676
[rumbling]

90
00:12:25,954 --> 00:12:27,623
[whining]

91
00:12:35,714 --> 00:12:40,552
North American saber-toothed cats
are powerful hunters.

92
00:12:43,430 --> 00:12:47,518
But they won't say no
to scavenging an easy meal.

93
00:12:56,985 --> 00:13:01,823
The sun is low,
so the tar is still solid underfoot.

94
00:13:39,278 --> 00:13:40,863
Dire wolves.

95
00:13:42,739 --> 00:13:46,034
The saber-toothed cats' deadly rivals.

96
00:13:49,705 --> 00:13:51,331
[sniffing]

97
00:13:51,415 --> 00:13:55,460
Pack hunters with a bone-crushing bite.

98
00:14:14,897 --> 00:14:19,776
The pack will kill the cubs
if they get the chance.

99
00:14:33,290 --> 00:14:36,960
Sabertooths and dire wolves
are an even match.

100
00:14:38,670 --> 00:14:39,671
[wolf bellows]

101
00:14:40,631 --> 00:14:44,426
But the tar has changed everything.

102
00:14:49,264 --> 00:14:51,767
[growling]

103
00:14:52,434 --> 00:14:58,190
The dire wolves use their powerful
sense of smell to find a safe path.

104
00:14:58,857 --> 00:15:00,067
[sniffing]

105
00:15:03,779 --> 00:15:05,697
[whimpers]

106
00:15:13,121 --> 00:15:14,581
[snarls]

107
00:15:14,665 --> 00:15:16,166
[growling]

108
00:15:17,459 --> 00:15:19,461
[growls, yelps]

109
00:15:24,132 --> 00:15:25,133
[growling]

110
00:15:25,717 --> 00:15:26,718
[dire wolf barks]

111
00:15:28,846 --> 00:15:30,305
[snarls]

112
00:15:36,520 --> 00:15:39,064
With her cubs in mortal danger…

113
00:15:39,147 --> 00:15:40,315
[growling]

114
00:15:45,404 --> 00:15:48,991
…she finds the strength to break free.

115
00:15:51,201 --> 00:15:52,953
[snarling, growling]

116
00:16:05,215 --> 00:16:07,885
The pack are powerless to help.

117
00:16:16,310 --> 00:16:21,064
Tar pits caused the deaths
of thousands of Ice Age creatures.

118
00:16:22,566 --> 00:16:26,195
This family has been lucky.

119
00:16:32,034 --> 00:16:34,661
As the temperature rises around the world,

120
00:16:34,745 --> 00:16:40,000
life is also changing dramatically
on Ice Age grasslands.

121
00:16:42,169 --> 00:16:44,546
These reindeer are managing.

122
00:16:47,758 --> 00:16:53,180
But survival is getting much harder
for Megaloceros…

123
00:16:55,516 --> 00:16:58,852
a giant Ice Age deer.

124
00:17:15,410 --> 00:17:18,872
He needs open ground to thrive.

125
00:17:22,000 --> 00:17:24,586
But as water returns to the landscape,

126
00:17:25,671 --> 00:17:29,174
forests are taking over once again.

127
00:17:36,390 --> 00:17:42,479
He's the proud owner
of the biggest antlers of all time.

128
00:17:44,898 --> 00:17:47,401
Twelve feet across.

129
00:17:55,117 --> 00:17:58,704
In breeding season
they help attract a mate.

130
00:17:59,830 --> 00:18:03,417
At this time of the year, though,
they're a burden.

131
00:18:12,885 --> 00:18:14,887
Cave hyenas.

132
00:18:20,184 --> 00:18:25,022
Ferocious predators
twice the size of a wolf.

133
00:18:25,772 --> 00:18:28,692
They've hunted these giants
for thousands of years.

134
00:18:28,775 --> 00:18:30,277
[hyenas howling]

135
00:18:36,575 --> 00:18:38,493
Megaloceros are fast.

136
00:18:39,328 --> 00:18:44,333
Once they get going they can reach
over 50 miles per hour.

137
00:18:51,006 --> 00:18:54,510
With a head start
he can outsprint the hyenas.

138
00:19:01,558 --> 00:19:03,185
But they don't give up.

139
00:19:04,686 --> 00:19:06,939
They have an age-old strategy.

140
00:19:07,523 --> 00:19:10,734
If they can stay just close enough
to keep him running…

141
00:19:11,276 --> 00:19:13,779
and never let him catch his breath…

142
00:19:15,072 --> 00:19:17,115
they might run him down.

143
00:19:22,037 --> 00:19:24,456
Maybe sooner than they think.

144
00:19:31,296 --> 00:19:33,924
There's only one way out.

145
00:19:42,641 --> 00:19:44,560
[panting]

146
00:19:53,151 --> 00:19:54,236
Safe…

147
00:19:55,112 --> 00:19:56,822
[hyenas howling]

148
00:19:56,905 --> 00:19:58,240
…for now.

149
00:20:07,666 --> 00:20:09,293
As the ice sheets melt,

150
00:20:09,877 --> 00:20:13,213
the Earth's atmosphere
gets wetter and wetter.

151
00:20:15,007 --> 00:20:16,884
Here in the tropics,

152
00:20:16,967 --> 00:20:20,971
forests are expanding
even faster than in the north.

153
00:20:21,847 --> 00:20:24,850
And they're full of strange animals…

154
00:20:28,437 --> 00:20:30,355
like this tenrec.

155
00:20:32,608 --> 00:20:34,776
They love to eat insects…

156
00:20:36,695 --> 00:20:38,864
and birds' eggs.

157
00:20:42,117 --> 00:20:46,038
But this one is out of his league.

158
00:20:50,751 --> 00:20:52,586
- [squeaks]
- It is after all

159
00:20:52,669 --> 00:20:55,130
the biggest egg of all time.

160
00:20:56,173 --> 00:21:00,677
And it belongs to
the biggest bird of all time.

161
00:21:03,555 --> 00:21:05,557
An elephant bird.

162
00:21:08,185 --> 00:21:12,940
Their brightly colored neck wattles
help attract a mate.

163
00:21:18,111 --> 00:21:22,032
This giant is about to become a father.

164
00:21:28,121 --> 00:21:30,457
But something is wrong.

165
00:21:34,253 --> 00:21:36,338
His chick is taking its time.

166
00:21:38,006 --> 00:21:39,758
They're running late.

167
00:21:44,847 --> 00:21:47,933
Elephant birds
synchronize their egg laying

168
00:21:48,016 --> 00:21:50,811
so the chicks hatch at the same time.

169
00:21:51,728 --> 00:21:53,897
[cooing]

170
00:22:05,200 --> 00:22:09,371
The flock heads off together
on a road trip.

171
00:22:16,253 --> 00:22:21,091
When you weigh one ton,
flying isn't an option.

172
00:22:27,598 --> 00:22:30,267
No one likes to be left behind.

173
00:22:33,437 --> 00:22:36,273
But this chick just won't be hurried.

174
00:22:54,875 --> 00:22:56,919
The others have already left,

175
00:22:57,002 --> 00:23:00,339
heading for their
summer home in the wetlands.

176
00:23:08,555 --> 00:23:11,308
[squawking]

177
00:23:19,983 --> 00:23:23,070
But she's still a bit wobbly on her feet.

178
00:23:40,128 --> 00:23:45,592
For the next nine months
he'll be her sole provider and protector.

179
00:23:47,886 --> 00:23:49,304
[rumbling]

180
00:23:52,683 --> 00:23:55,519
They need to catch up with the convoy.

181
00:24:09,658 --> 00:24:13,078
Elephant birds travel together
for good reason.

182
00:24:17,374 --> 00:24:20,419
The forest is a dangerous place.

183
00:24:27,885 --> 00:24:30,470
Stragglers are a prime target.

184
00:24:51,325 --> 00:24:53,076
Giant fossa.

185
00:24:56,079 --> 00:25:00,459
An ambush predator, fast and agile.

186
00:25:03,754 --> 00:25:06,965
[lemurs squawking]

187
00:25:09,343 --> 00:25:12,179
This is no time for a snack.

188
00:25:41,708 --> 00:25:42,709
[snarls]

189
00:25:43,669 --> 00:25:44,670
[hissing]

190
00:26:05,023 --> 00:26:08,402
The convoy has arrived at its destination.

191
00:26:10,946 --> 00:26:12,865
Rain has returned here…

192
00:26:14,283 --> 00:26:16,285
creating these wetlands…

193
00:26:17,703 --> 00:26:21,456
with plenty of food and drink for all.

194
00:26:30,340 --> 00:26:32,676
But what about the stragglers?

195
00:26:43,520 --> 00:26:47,649
Even the very last chick to hatch
has made it.

196
00:26:56,867 --> 00:27:02,206
As wetlands expand,
their numbers are growing every year.

197
00:27:05,375 --> 00:27:10,881
The Big Melt is the start of a golden age
for elephant birds.

198
00:27:13,133 --> 00:27:18,972
But for the giant stag,
the world is closing in.

199
00:27:24,353 --> 00:27:29,358
In a forest,
12-foot antlers are a liability.

200
00:27:32,152 --> 00:27:34,780
[hyenas howl]

201
00:27:44,540 --> 00:27:49,211
Downstream, the hyenas have found
a place to cross.

202
00:28:27,666 --> 00:28:28,792
Trapped.

203
00:28:35,174 --> 00:28:37,009
[panting]

204
00:28:38,468 --> 00:28:40,470
[huffing]

205
00:28:51,273 --> 00:28:52,900
[growling]

206
00:28:58,447 --> 00:29:01,200
- [snapping]
- [hyenas whimpering]

207
00:29:20,761 --> 00:29:23,430
A miraculous escape.

208
00:29:32,439 --> 00:29:36,735
- [sniffing]
- Shedding his antlers saved him.

209
00:29:42,866 --> 00:29:46,328
A new set will grow
for the next breeding season.

210
00:29:49,206 --> 00:29:55,546
But the time for his kind
and the hyenas is running out.

211
00:30:05,806 --> 00:30:11,019
The saber-toothed cats have been
tracking the mammoth herd for two days.

212
00:30:12,437 --> 00:30:16,525
[mammoths rumbling, trumpeting]

213
00:30:21,405 --> 00:30:24,157
Their patience has paid off.

214
00:30:32,082 --> 00:30:33,375
The male,

215
00:30:33,458 --> 00:30:38,046
injured during the cats' first attack,
has fallen behind.

216
00:30:46,471 --> 00:30:47,931
He's vulnerable.

217
00:30:54,271 --> 00:30:58,358
In the cat world, her kind are unique.

218
00:30:59,943 --> 00:31:02,654
She has the power of a lion…

219
00:31:05,365 --> 00:31:08,243
and the agility of a leopard.

220
00:31:10,746 --> 00:31:12,080
[mammoth rumbling]

221
00:31:27,095 --> 00:31:28,180
[cat roars]

222
00:31:47,324 --> 00:31:50,661
The cats will survive another winter.

223
00:31:58,710 --> 00:32:01,505
The mammoth herd too.

224
00:32:02,005 --> 00:32:03,173
[trumpets]

225
00:32:10,013 --> 00:32:12,015
But their world is changing.

226
00:32:14,434 --> 00:32:15,519
[mammoth trumpets]

227
00:32:17,104 --> 00:32:20,816
A new predator born of the Ice Age

228
00:32:21,650 --> 00:32:24,987
is spreading to every corner
of the planet.

229
00:32:26,321 --> 00:32:31,076
And that story is still unfolding.

230
00:32:45,257 --> 00:32:48,260
[Hiddleston] Giant mammals
ruled the Ice Age.

231
00:32:52,347 --> 00:32:56,685
But almost all of them died out
during the Big Melt.

232
00:32:59,813 --> 00:33:02,274
It's wild and super weird to think

233
00:33:02,357 --> 00:33:06,945
that all the big animals
that used to exist completely disappeared.

234
00:33:08,197 --> 00:33:09,781
[Hiddleston] What happened to them?

235
00:33:11,450 --> 00:33:12,534
And why?

236
00:33:19,583 --> 00:33:22,836
One surprising place has some answers.

237
00:33:23,754 --> 00:33:24,796
Los Angeles.

238
00:33:26,256 --> 00:33:31,678
[Lindsey] If you came to LA
and saw the massive network of freeways,

239
00:33:31,762 --> 00:33:35,974
it would never occur to you
this had one of the richest records

240
00:33:36,058 --> 00:33:38,352
of the Ice Age anywhere on the planet.

241
00:33:39,269 --> 00:33:41,772
Like the African savanna on steroids.

242
00:33:43,398 --> 00:33:46,318
Most people don't move to LA
to be paleontologists.

243
00:33:46,401 --> 00:33:48,862
But some of us do.

244
00:33:48,946 --> 00:33:50,447
That's why I'm here.

245
00:33:51,657 --> 00:33:55,285
[Hiddleston] Emily's here
because of an extraordinary place.

246
00:33:55,369 --> 00:34:01,291
An ancient pool of tar
called the La Brea Tar Pits.

247
00:34:02,543 --> 00:34:07,047
[Lindsey] La Brea Tar Pits is the richest
Ice Age fossil site in the world.

248
00:34:08,090 --> 00:34:10,926
We've found close to five million fossils

249
00:34:12,469 --> 00:34:16,681
and we are still excavating
new ones almost every single day.

250
00:34:18,934 --> 00:34:21,018
These pools of tar

251
00:34:21,103 --> 00:34:25,482
have acted as traps
that have caught and preserved

252
00:34:25,565 --> 00:34:29,360
anything living that has walked into them

253
00:34:30,362 --> 00:34:34,949
and built up the most
incredible record of Ice Age life.

254
00:34:40,914 --> 00:34:41,915
[snarls]

255
00:34:43,917 --> 00:34:48,755
[Herridge] You have this unbelievably
rich fossil record at La Brea.

256
00:34:48,839 --> 00:34:50,090
The number of bones

257
00:34:50,174 --> 00:34:53,552
that have come out of this site
is extraordinary.

258
00:34:54,344 --> 00:34:58,348
[Lindsey] We have probably close to
3,000 saber-toothed cats.

259
00:34:58,849 --> 00:35:00,517
5,000 dire wolves.

260
00:35:01,310 --> 00:35:04,730
This is like an Aladdin's cave of fossils.

261
00:35:06,231 --> 00:35:10,652
[Hiddleston] What's odd is that
the fossil record suddenly stops…

262
00:35:11,945 --> 00:35:15,532
as if the animals just
vanished off the face of the Earth.

263
00:35:17,826 --> 00:35:20,579
[Lindsey] We are able
to radiocarbon date the bone

264
00:35:20,662 --> 00:35:24,041
and pinpoint exactly
when they disappeared.

265
00:35:25,209 --> 00:35:28,962
What was surprising
was that almost all of these species

266
00:35:29,046 --> 00:35:31,673
disappeared exactly
the same moment in time.

267
00:35:31,757 --> 00:35:37,179
They all hit this wall at 13,000 years ago
and they never show up again.

268
00:35:38,555 --> 00:35:43,185
Those vast landscapes
teeming with herds of enormous

269
00:35:43,268 --> 00:35:46,480
Ice Age creatures and
they're suddenly just gone.

270
00:35:47,606 --> 00:35:50,859
[Gilbert] The disappearance of
these animals makes us wonder,

271
00:35:50,943 --> 00:35:53,654
"Why did this happen so suddenly?"

272
00:35:53,737 --> 00:35:56,156
[Hiddleston] One reason
was that the climate changed

273
00:35:56,240 --> 00:35:58,784
too fast at the end of the Ice Age.

274
00:35:59,493 --> 00:36:04,998
California warmed ten degrees
in just a few thousand years.

275
00:36:05,082 --> 00:36:07,084
Half of the trees disappeared.

276
00:36:07,167 --> 00:36:09,962
Droughts lasted for decades at a time.

277
00:36:10,838 --> 00:36:14,174
It's possible that the animals

278
00:36:14,258 --> 00:36:18,720
were just simply not able to adapt
fast enough to this changing climate.

279
00:36:21,849 --> 00:36:26,061
[Hiddleston] But the work at La Brea
shows something else was going on.

280
00:36:27,354 --> 00:36:32,067
[Lindsey] The team started looking at
core samples from a nearby lake

281
00:36:32,150 --> 00:36:36,446
to understand what was going on
with the environment at this time.

282
00:36:36,530 --> 00:36:41,952
And what's really surprising is
there was a huge increase in charcoal.

283
00:36:43,871 --> 00:36:46,623
[Hiddleston] A new species had arrived.

284
00:36:47,624 --> 00:36:51,420
And with it a devastating new force.

285
00:36:56,300 --> 00:36:59,011
Fire is the most powerful tool
people have ever invented.

286
00:36:59,720 --> 00:37:05,642
We set fires to cook, to see at night,
to clear land for hunting.

287
00:37:06,476 --> 00:37:13,150
The first people to arrive in this area
were living in a complete tinderbox.

288
00:37:14,151 --> 00:37:16,570
People brought in the ignition source.

289
00:37:18,238 --> 00:37:20,282
In tens of thousands of years

290
00:37:20,365 --> 00:37:24,203
there had never been any level
of fire activity anywhere close to this.

291
00:37:25,787 --> 00:37:27,456
[Gilbert] It's like a bomb going off.

292
00:37:27,956 --> 00:37:30,167
That can completely decimate
the environment

293
00:37:30,250 --> 00:37:34,046
and puts huge amounts of pressure
on the animals that were living there.

294
00:37:35,631 --> 00:37:40,636
[Hiddleston] Whether the fires were
intentional or accidental isn't known,

295
00:37:41,178 --> 00:37:43,847
but they destroyed animal habitats.

296
00:37:44,765 --> 00:37:48,060
And combined with the hunting skills
of our ancestors

297
00:37:49,019 --> 00:37:51,063
it was the perfect storm.

298
00:37:52,022 --> 00:37:53,065
Across the planet,

299
00:37:53,148 --> 00:37:57,194
this combination of climate change
and human activity

300
00:37:57,945 --> 00:38:01,323
killed off almost all the Ice Age giants,

301
00:38:02,032 --> 00:38:04,868
leading to the world we know today.