Scientists prowled the High Plains last summer during the largest chase ever. A perplexing mystery deep beneath Greenland's frozen icecap. A rare look at these unusual and capricious formations. How scientists probe the Earth for clues to the planet's climatological history. Decide for yourself.
Sundials are among humanity's most ancient and enduring inventions.
Amy Marx's paintings are about the awesome power of nature. Avalanches, floods, and typhoons led to misery for millions. The year featured several devastating outbreaks in major metropolitan areas. Floyd was the year's deadliest and most destructive tropical system. Except for the Pacific Northwest, seasonal snowfall totals were quite low across the United States.