New research shows that permafrost contains huge amounts of particles that make it easier for cloud moisture to freeze. Thawing permafrost is releasing these ice-nucleating particles.

Food farmed in tropical and Mediterranean climates comes at a higher cost to biodiversity than that grown elsewhere.

Trees may be more resilient to future dry spells than scientists first thought.

Climate change is a true existential threat for small island nations, but the US has done little to help the Marshall Islands, which it administered for decades.

The 2020 wildfire season has shattered records across the West. It's a trend that's headed in a dangerous direction.

From June through October, it's not unusual for huge Saharan dust plumes to blow across the Atlantic. They can darken skies but also bring calmer weather and electric sunsets. Here's how they form.

Yellow fever, malaria and Ebola all spilled over from animals to humans at the edges of tropical forests. The new coronavirus is the latest zoonosis.

Climate models have been overestimating how much sunlight hits the Southern Ocean. This is because the clouds there are different from clouds anywhere else. Bacterial DNA helped us understand why.

'Wet-bulb' temperature records show that deadly thresholds for heat and humidity are arriving faster than anticipated.