The Amazon rainforest could approach a tipping point, which could lead to a large-scale collapse with serious implications for the global climate system. 

In the 2050s, one-third of the world's rivers could be affected by water scarcity or be polluted by nitrogen. 

In Greenland, where temperatures are rising twice as fast as across the rest of the world, the icy, rocky landscape is turning increasingly green, a new study finds.

Honey bees carrying nectar have the remarkable ability to adjust their flight behavior to avoid overheating when air temperatures increase, according to research led by a University of Wyoming scientist.

More time stranded on land means greater risk of starvation for polar bears, a new study indicates.

Scientists quantify a previously overlooked driver of human-related mercury emissions.

The skies above us are teeming with tiny particles of dust, sea salt, smoke, and human-made pollutants. 

Soil moisture can determine how quickly a wildfire spreads, how fast a hill turns into a mudslide and, perhaps most importantly, how productive our food systems are.

Sea urchins exposed to diluted seawater for long periods show signs of physical deterioration, according to scientists from British Antarctic Survey, the University of Cambridge and the Scottish Association for Marine Science.

A chemical element so visually striking it was named for a goddess shows a “Goldilocks” level of reactivity – neither too much nor too little – that makes it a strong candidate as a carbon scrubbing tool.