When forecasters warn about a 100-year or 500-year flood, it doesn’t mean it only happens once every century. A 100-year ...

An audience member takes a selfie with Hoff Xu, who cosplayed a movie character before a screening of the movie Ne Zha 2 on ...

Here’s what to know about how scientists determine how extreme a flood is and how common these extreme events are becoming.

Weather forecasters sometimes warn of storms that unleash rains so unusual they are described as 100 ... year floods. Here’s what to know about how scientists determine how extreme a flood ...