NOVA.

NOVA

Ancient Earth: Birth of the Sky

Animation and science experts reveal how the blue sky came to be. (60 minutes)

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UPCOMING EPISODES

Sun, 11/24 at 3:00 am on Austin PBS HDTV

Building Stuff: Reach It!

Engineers design and build creative new ways to get around, from affordable deep-sea subs to flying taxis. (60 minutes)

Tue, 11/26 at 6:00 pm on Austin PBS WORLD

Building Stuff: Reach It!

Engineers design and build creative new ways to get around, from affordable deep-sea subs to flying taxis. (60 minutes)

Tue, 11/26 at 11:00 pm on Austin PBS WORLD

Building Stuff: Reach It!

Engineers design and build creative new ways to get around, from affordable deep-sea subs to flying taxis. (60 minutes)

Wed, 11/27 at 7:00 am on Austin PBS WORLD

Building Stuff: Reach It!

Engineers design and build creative new ways to get around, from affordable deep-sea subs to flying taxis. (60 minutes)

Wed, 11/27 at 4:00 pm on Austin PBS HDTV

Building Stuff: Reach It!

Engineers design and build creative new ways to get around, from affordable deep-sea subs to flying taxis. (60 minutes)

Wed, 11/27 at 8:00 pm on Austin PBS HDTV

Building Stuff: Change It!

From building new water filters to a robot that uses acoustics to revive coral reefs, engineers reshape the natural world and create new human-made environments that align with society's needs. (60 minutes)

Thu, 11/28 at 1:00 am on Austin PBS HDTV

Building Stuff: Change It!

From building new water filters to a robot that uses acoustics to revive coral reefs, engineers reshape the natural world and create new human-made environments that align with society's needs. (60 minutes)