There was a time when mammals didn’t rule the earth. Some 65 million years ago, we weren’t much more than tree shrews. After that giant meteor plunged into the Yucatán Peninsula, spreading fire and…
There was a time when mammals didn’t rule the earth. Some 65 million years ago, we weren’t much more than tree shrews. After that giant meteor plunged into the Yucatán Peninsula, spreading fire and…
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