Nature

Expedition Killer Whale

Scientists and filmmakers explore the icy waters of Antarctica to observe how killer whales hunt. (60 minutes)

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Sun, 3/30 at 3:00 am on Austin PBS HDTV

Biologists study the ocelot in South Texas, the most endangered wild cat in the U.S. (60 minutes)

Sun, 3/30 at 3:55 pm on Austin PBS HDTV

Biologists study the ocelot in South Texas, the most endangered wild cat in the U.S. (62 minutes)

Wed, 4/2 at 7:00 pm on Austin PBS HDTV

The dry season brings threats to the hippos, crocodiles and lions of Africa's Katavi National Park. (60 minutes)

Thu, 4/3 at 1:00 am on Austin PBS HDTV

The dry season brings threats to the hippos, crocodiles and lions of Africa's Katavi National Park. (60 minutes)

Sun, 4/6 at 3:00 am on Austin PBS HDTV

The dry season brings threats to the hippos, crocodiles and lions of Africa's Katavi National Park. (60 minutes)

Sun, 4/6 at 4:00 pm on Austin PBS HDTV

The dry season brings threats to the hippos, crocodiles and lions of Africa's Katavi National Park. (60 minutes)