Tropical mountain diversity: species rise from below, but also travel from afar

Herculean taxonomy expedition reveals dual origin of tropical mountain organisms. More »

China’s horrific haze: New sources need control

Power plants, vehicles, farms and industry release a wide range of substances, and a surprising range of them form dangerous More »

Plants have evolved numerous ways to endure cold, wind and ice formation. How do they do it? How is climate change affecting plants and More »

First we focused on cutting nitrogen pollution. Then we switched to phosphorus. Now we hear that cutting the second raises the first. More »

Conservation and fracking will help United States reach energy independence by 2030. How will cheap natural gas affect renewable More »

Vast deposits of a strong greenhouse gas are frozen under the ocean. As the ocean warms, this methane is releasing. How much more More »

Deforestation, fires, mining and agriculture outside a nature reserve can have as much impact as the same activities inside the More »

Constant fire-fighting has made remaining fires more intense, but controlled burns have their own hazards. More »

When everybody exploits a common resource without limit, we get the tragedy of the commons: Benefiting the individuals burns through More »

When too much fertilizer reaches the Gulf of Mexico through the Mississippi River, a vast area gets robbed of oxygen. What can be done? More »

Woman is rescued in wilderness after 5-week ordeal. What is so great about wilderness, and why do so many people think they need it? More »

Some call it Fall. Some call it spring. But nobody in the Midwest, East Coast or Northern Europe is calling it “winter.” What’s up? More »

As the administration allows more snowmobiles to buzz through Yellowstone, scientists cry foul. Are the parks more than playgrounds? More »

Feeling burned? Farmed salmon have higher levels of a brominated flame retardant than wild salmon. More »

Evidence from ice cores in Greenland and Antarctica show how fast the climate has changed in the past. More »