The flash floods killed at least 135 people in Texas over the holiday weekend, with most deaths along the Guadalupe River in ...

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

"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." ...