Biology
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Cells, bodies, evolution and everything that grows.
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Why an elephant doesn't eat 200,000 times more than a mouse: Kleiber's three-quarter law
A mouse is 200,000 times lighter than an elephant, yet the elephant burns only about 9,000 times more energy. In 1932 Max Kleiber found that resting metabolic…
How chameleons change colour: they stretch a mirror made of crystals
A chameleon doesn't change colour by mixing pigments. Under its skin sit cells packed with tiny guanine crystals, arranged in a lattice that works like a…