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steam crazy amazing science energy - 7649369600
By Unknown
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From Popsci:

Today in mind-bendingly cool stuff that nanoparticles can do: A team of researchers at Rice University in Texas has demonstrated a mechanism by which they can create steam in just seconds by focusing sunlight on a mixture of water and nanoparticles. This isn't just some artificial means of lowering boiling point either; this solar powered "boiler" can produce steam before the water even gets warm to the touch, without ever bringing the aggregate water to a boil.

crazy teeth shark science fish - 7093464320
Via WolyBoly
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The Helicoprion was a shark-like fish that arose in the oceans of the late Carboniferous 280 million years ago, and eventually went extinct during the early Triassic some 225 million years ago.