NOVA.

NOVA

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)

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UPCOMING EPISODES

Wed, 11/26 at 8:00 pm on Austin PBS HDTV

Revolutionary War Weapons

The military technologies that helped propel the colonies to victory, from the Brown Bess musket to the world's first military submarine. (60 minutes)

Thu, 11/27 at 1:30 am on Austin PBS HDTV

Revolutionary War Weapons

The military technologies that helped propel the colonies to victory, from the Brown Bess musket to the world's first military submarine. (60 minutes)

Tue, 12/2 at 6:00 pm on Austin PBS WORLD

Revolutionary War Weapons

The military technologies that helped propel the colonies to victory, from the Brown Bess musket to the world's first military submarine. (60 minutes)

Tue, 12/2 at 11:00 pm on Austin PBS WORLD

Revolutionary War Weapons

The military technologies that helped propel the colonies to victory, from the Brown Bess musket to the world's first military submarine. (60 minutes)

Wed, 12/3 at 7:00 am on Austin PBS WORLD

Revolutionary War Weapons

The military technologies that helped propel the colonies to victory, from the Brown Bess musket to the world's first military submarine. (60 minutes)