August 31, 2014; 1:20 AM ET
Showers and thunderstorms will continue to threaten to interfere with outdoor plans around Pittsburgh through the remainder of this Labor Day holiday weekend. more >
California's iconic trees, the giant sequoias, may sail through the state's current extreme drought. The huge trees survived even drier conditions during their long lives, studies show. The oldest sequoias live for more than 3,000 years.