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.

A sweeping new report, unveiled at the start of a major U.N. conference on the conservation of wildlife, held in Samarkand, Uzbekistan, finds that nearly half of migratory species are in decline, from Egyptian vultures to steppe eagles to wild camels.

New findings explain how soil sequesters plant-based carbon from the atmosphere.

A Colorado State University experiment spanning more than two decades has found that removal of apex predators from an ecosystem can create lasting changes that are not reversed after they return – at least, not for a very long time. 

Forests, which cover a third of Earth's land surface, are pivotal in carbon storage and the water cycle, though the full scope of their impact remains to be fully understood.