NOVA.

NOVA

Polar Extremes

Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life. (60 minutes)

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UPCOMING EPISODES

Sun, 7/13 at 4:00 am on Austin PBS HDTV

Dino Birds

Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today. (60 minutes)

Sun, 7/13 at 4:00 pm on Austin PBS HDTV

Dino Birds

Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today. (60 minutes)

Tue, 7/15 at 6:00 pm on Austin PBS WORLD

Dino Birds

Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today. (60 minutes)

Tue, 7/15 at 11:00 pm on Austin PBS WORLD

Dino Birds

Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today. (60 minutes)

Wed, 7/16 at 7:00 am on Austin PBS WORLD

Dino Birds

Rare fossil discoveries reveal the secrets of bird evolution, and how some feathered dinos became the colorful birds that fill the sky today. (60 minutes)

Wed, 7/16 at 9:00 pm on Austin PBS HDTV

When Whales Could Walk

Paleontologists uncover a whole new species of whale in a parched valley not far from Cairo. (60 minutes)

Thu, 7/17 at 3:00 am on Austin PBS HDTV

When Whales Could Walk

Paleontologists uncover a whole new species of whale in a parched valley not far from Cairo. (60 minutes)