The tiny cell that broke a big rule of biology

For decades, Jon Zehr was haunted by an organism he knew was there — but couldn’t see. It all started in the ‘90s on a research boat in the middle of the ocean. Zehr was an oceanographer studying nitrogen-fixing bacteria — simple, microbial life forms that could pull the element straight...

How to build a highway in the age of climate change

Between the view, the marshes, and the birds, Liat Meitzenheimer concedes the drive along California State Route 37 is scenic. Still, she avoids it for two reasons: congestion and flooding. The highway, about half of which is two-lane, is often backed up with people commuting between affordable communities in Solano...

Why heat is so deadly and how to stay safe

Don’t underestimate heat. While less visible than other extreme weather events like hurricanes or floods, heat consistently accounts for more U.S. fatalities than any other type of weather disaster. Around the world, extreme heat now kills one person every minute, according to a recent report, a rate that has risen...