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Fun facts
An octopus has three hearts and blue blood. Two pump to the gills, one to the rest of the body — and that one stops beating whenever it s…
Fun facts
A day on Venus is longer than its year: it takes 243 Earth-days to spin once, but only 225 to orbit the Sun.
Fun facts
You'll never see a rainbow at high noon. They only appear when the sun sits below about 42° — so mornings and late afternoons.
Fun facts
Only female mosquitoes bite — they need the protein in blood to develop their eggs. Males just feed on flower nectar.