Biology
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Cells, bodies, evolution and everything that grows.
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How a Venus flytrap counts to five without a brain
A Venus flytrap ignores the first touch. Brush one of its trigger hairs and nothing happens; brush a second within about half a minute and the jaws slam shut…
Autumn leaves don't turn yellow. The yellow was there all summer
Autumn leaves don't really turn yellow. The yellow carotenoids were in the leaf all summer, hidden under green chlorophyll. In autumn the tree dismantles its…