Tempest in an Igloo

Scientists can now create a micro-tornado — half the width of a human hair — within a small ice dome. The process is the same as that which creates the real thing, rapidly rising heated air. Liquid at the surface, laced with polystyrene nanospheres for some reason, evaporates and meets the cool air from the igloo roof. Presto, after 191 hours of observation, an eensy weensy twister.

No word on whether they can kill miniature witches. Ha!



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