This is the summer of flooding across the US, and scientists know why

In a new CNN feature, Penn IUR Faculty Fellow Dr. Michael Mann, Presidential Distinguished Professor at the University of Pennsylvania, explains how human-caused climate change is increasing the frequency and intensity of so-called “1,000-year” rainfall events. These aren’t flukes. They’re part of a disturbing pattern driven by rising global temperatures and fueled by warmer oceans and air carrying more moisture.

Read more here: https://www.cnn.com/2025/07/20/climate/summer-of-flooding