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A very special snowball

The long-predicted ice XV has been spotted in the lab

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12:57pm, September 11, 2009

Scientists have created the final predicted form of stable ice, called ice XV, in the lab. But don’t worry — Kurt Vonnegut had nothing to do with it, and the exotic new form of ice can’t destroy civilization.

Types of ice are classified by how close the water molecules pack together and the structure the molecules arrange themselves in. With the new discovery, researchers have identified 16 forms of ice (including two types of ice I) named in

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