A new CRASH Clock measures the chance of satellite collisions, and it’s ticking down fast

Tropical forests can stop acting as carbon sinks during El Niño, says research

Some of South America’s tropical forests effectively stopped absorbing carbon during the 2015-2016 El Niño.

AI can’t replace mental health therapists. But here’s where it might make a difference

As more people turn to chatbots for support, new research is exploring a potential role for AI in spotting early signs of depression.

Clean energy helped the grid avoid heat-wave catastrophe

Last week's high temperatures pushed the U.S. grid to its limits, and showcased how new wind and solar additions are essential to keeping the lights on.

The oceans are full of heat, and it’s coming ashore

The nation’s biggest public utility just doubled down on coal, gas, and nuclear

Southern California clean-heat rule survives key legal challenge

A U.S. appeals court upheld the first-in-the-nation measure, which will slash smog-forming emissions from certain gas-fueled boilers and heaters in the…