Chewie, Lucy’s Imaginary Big Brother, Left Footprints in Tanzania

Chewie, Lucy’s Imaginary Big Brother, Left Footprints in Tanzania

The new footprints are a bit bigger than these. Image courtesy of Momotarou2012, Creative Commons (CC BY-SA 3.0). Joel Kontinen “There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling...

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