Why icicles are rippled

Winter is coming to an end; the last nights of below zero temperatures are here. In the morning, one still spots the occasional icicle on a gutter or car bumper. When you look at these icicles carefully, you may notice that ...

Water impurities key to an icicle's ripples

A group of physicists from Canada have been growing their own icicles in a lab in the hope of solving a mystery that has, up until now, continued to puzzle scientists.

Icicle shape stranger than thought (w/ Video)

Look out your window at the icicles beginning to grow on the edges of roofs and car bumpers, and you might think that all icicles are shaped the same -- long, straight and pointy.