How fast does the Earth rotate?

The answer, obviously, is really, really fast. Here, Universe Today's Fraser Cain tells us exactly how fast, and gives us answers to a few other things you may have wondered about before. For instance: how much lighter are you on a spinning Earth as opposed to a stationary one?

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Your daily dose of nightmare fuel: squiggly ant-parasites from hell

From entomologist, blogger and insect photographer Alex Wild comes this remarkable image of a trapjaw ant, torn asunder to reveal the wriggling, 8-inch parasitic worm living inside. (The ant, by comparison, measures about half an inch long.)

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So this DVD looks and smells like pizza when it's finished playing

It's been been covered with a heat-activated label that changes from black to a picture of a pizza once it's done a few thousand revolutions inside your DVD player. At which point it also smells like pizza. Utterly dumb, or totally brilliant? We report – YOU DECIDE.

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Tyrannosaurus rex was a thrasher, prone to vigorously shaking its powerful, prey-packed jaws from side-to-side like a crocodile. But new simulations reveal Allosaurus was equipped to dismember its prey with a little more decorum, stripping flesh from bone not with the head-swinging motion of a croc, but the meticulous tug-tug-tug of a falcon.

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Chris Hadfield talks about re-adapting to Earth's gravity

What's the illustrious Chris Hadfield – former commander of the International Space Station – been up to since departing low-Earth orbit? Re-adapting to gravity, for one (Hadfield: "my body was quite happy in space without gravity") and participating in this fantastic press conference, his first since he returned to…

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