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

Thu, 12/25 at 2:00 am on Austin PBS HDTV

Dog Tales

A look at dog domestication, how scientists test wolf intelligence and decode canine DNA, and what science says about a dog's love for humans. (60 minutes)

Sun, 12/28 at 3:00 am on Austin PBS WORLD

Polar Extremes

Paleontologist Kirk Johnson explores the polar extremes of the planet, including miles-high ice sheets and warm polar forests brimming with life. (120 minutes)

Sun, 12/28 at 3:00 am on Austin PBS HDTV

Dog Tales

A look at dog domestication, how scientists test wolf intelligence and decode canine DNA, and what science says about a dog's love for humans. (60 minutes)

Sun, 12/28 at 4:00 am on Austin PBS HDTV

Cat Tales

The perplexing behaviors of cats have often raised the question of whether humans ever really domesticated felines. (60 minutes)

Sun, 12/28 at 3:00 pm on Austin PBS HDTV

Dog Tales

A look at dog domestication, how scientists test wolf intelligence and decode canine DNA, and what science says about a dog's love for humans. (60 minutes)

Sun, 12/28 at 4:00 pm on Austin PBS HDTV

Cat Tales

The perplexing behaviors of cats have often raised the question of whether humans ever really domesticated felines. (60 minutes)

Wed, 1/7 at 8:00 pm on Austin PBS HDTV

Arctic Sinkholes

Investigating explosions in Siberia and other evidence that melting soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas. (60 minutes)