Biology
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Cells, bodies, evolution and everything that grows.
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How honeybees give directions by dancing in the dark
A honeybee that finds good flowers can tell her sisters where they are, inside a pitch-black hive, by dancing. She runs in a straight line while shaking her…
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…