Scientists say human-caused warming is turning rare 1,000-year storms into repeat events, making summer increasingly deadly.

FEMA’s maps are essential tools for identifying flood risks, but they have significant gaps that limit their effectiveness.

The weekend is ending on a stormy note across a large portion of the U.S., as more than 76 million Americans face the threat of severe weather on Sunday from the Northeast to the Midwest.

"The science behind it is so basic you can see it in daily life," one researcher said. "Warm water drives more evaporation — the bathroom gets much steamier after a hot bath than a cold one." ...

Eight-year-old girls at sleep-away camp, families crammed into recreational vehicles, local residents traveling to or from ...