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.
While some fishapods were crawling out of water, others were diving right back in.
Charles Darwin encountered a tiny fox-like creature during his famous voyage.
In recent years, Archaea's connection to us has been pretty huge and surprising.
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