Tiny drops of dirty water, often mistaken for air bubbles, tell the tale of rippling icicle growth. While examining 3-millimeter-thick cross sections of icicles grown in the lab, University of Toronto ...

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 ...

FARGO — You may have noticed that icicles sometimes form with a very smooth edge and sometimes with ribbed sides. Physicists at the University of Toronto have determined that the difference is due to ...