(WHTM) — During the winter season, you may see long and sometimes thin strands of ice form from roof overhangs and gutters. These are called icicles. But how do icicles form and get their shape?

Icicles dangling from the eaves of your home might look picturesque, but they’re often a warning sign of underlying issues. Icicle formation usually occurs when warm air escapes your house, causing ...

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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 ...

Few things are more picturesque and capture the essence of winter like the sight of icicles. Glistening on a tree branch or fence post, they may seem beautiful. But hanging off the side of your house?

This photo, taken on Jan. 2, 2026, shows icicles having formed on the ground at a closed railway tunnel in Yeoncheon, north of Seoul. The icicles were made by water drops falling from the tunnel's ...