Watch NOVA’s new five-part series

Wed. Oct. 4 at 9 p.m.

Ancient Earth: Birth of the Sky, Part 1

Today, Earth is enveloped by a thin veil of gas, a narrow band of atmosphere that protects a world covered in lush green vegetation, deep blue oceans, and abundant life.

But 4.5 billion years ago, Earth was a very different place: a hellscape of molten lava and barren rock, under relentless bombardment from meteors, and with no atmosphere whatsoever.

So how did our familiar blue sky come to be? Breathtakingly realistic animations and a chorus of science experts reveal how the primordial inferno first gave rise to an orange-hued cauldron of toxic gasses that would be deadly to us today.

Witness how the first drops of rain splashed down on the searing planet, setting the stage for the evolution of life. And discover how life itself helped create the air we all breathe today.

A graphic of the American Revolution with text reading: America at 250: Indigenous Voices
Nov. 12

‘America at 250: Indigenous Voices’ screening, panel discussion

Federal shutdown leads to strain on Arizona food assistance programs

A view of Phoenix with the PBS logo and text reading: Annual Luncheon
Dec. 18

Join us for the Arizona PBS Annual Luncheon

Graphic of an Emmy® statue with text reading: Arizona PBS nominated for 8 Rocky Mountain Emmy® awards

Arizona PBS receives three 2025 Emmy® awards, nominated for eight

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