Brad Plumer

The lava is now within 100 yards of homes and evacuations have started.

Solar and wind power get all the attention, but the global hydropower frenzy could end up being just as consequential for the planet.

Thanks to the worst drought in eight decades, millions of people in São Paulo are facing water outages.

Back in 2010, there was plenty of panic about China’s dominance of the rare earths market. That panic turned out to be overblown.

Forest clearances are up 190 percent compared to last year, satellite data shows.

One fun fact: America gets 37% of its calories from sugar and fat. China gets 11%.

Home water use is often highest in the drought-plagued states — because of lawn watering.

It’s not the drop in panel prices. It’s small innovations in innovation, financing, and so forth.