NOVA
Could Whale Poop Help Cool the Planet?
Marine biologists unravel how whales and their poop trap carbon and feed the ocean.
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Ancient Earth May Have Had Red Oceans
On Ancient Earth, rust deep in the oceans played a critical role in the formation of Earth
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Giant Prehistoric Fungi Once Ruled the Earth
Fossils show that millions of years ago, 20-foot-high fungi grew on Earth.
NOVA
Ancient Earth Was a Hellscape
For millions of years, Earth was a fiery hellscape, inhospitable to life.
NOVA
What to know about the “Ring of Fire” Eclipse
The "Ring of Fire" eclipse is coming. Seriously, don’t look directly at it.