Video from a pier along Lake Michigan on Thursday morning showed thick coats of ice along the railings caused by an arctic blast of air dropping temperatures across the U.S.

The speed at which glaciers move changes predictably each year, according to the first-ever global map of how glacier and ice sheet speeds vary with the seasons. Knowing this yearly rhythm could help ...

If warming continues at this pace, coastal and island communities near the Indian, Pacific, and Western Atlantic oceans will ...