A thunderous explosion marked the completion of one of the world's largest dams Tuesday. We mark the occasion with a look at the big numbers—and controversy.
Indonesian officials are evacuating 11,000 people from around the Merapi volcano, as lava and clouds of gas and debris poured down its steep, upper slopes.
Some of the rare, remote habitats of the Northwestern Hawaiian Islands could disappear beneath the waves by 2100 because of rising sea levels, scientists say.
Parts of New Orleans are sinking even faster than scientists realized, shedding new light on what may have contributed to the flooding that followed Hurricane Katrina.
People have reported seeing small, glowing spheres of electricity for centuries. But scientists still can't explain what causes ball lightning, or even what it is.
The 2006 Atlantic hurricane season, which begins today, may bring nine hurricanes, experts say, with Florida and the East Coast the most likely places for landfall.
The magnitude 6.3 temblor that struck the Indonesian island this weekend is the latest in a string of geologic disasters to occur in the region over the past 18 months.
