08:52
Eons
When Plants Doubled Their DNA
For plants in times of great stress and ecological upheaval, the more DNA the better
- TV-Y7
Where Did Water Come From?
Join hosts Kallie Moore, Michelle Barboza-Ramirez, Gabriel Santos, and Blake de Pastino as they take you on a journey through the history of life on Earth. From the dawn of life in the Archaean Eon through the Mesozoic Era — the so-called “Age of Dinosaurs” -- right up to the end of the most recent Ice Age.
Where Did Water Come From?
Season 5 Episode 1 | 10m 17s | CC
Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.
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