Last year was one of the worst years on record for the Greenland ice sheet, which shrunk by hundreds of billions of tons.

As a persistent drought drags on, water levels are dropping at a key reservoir that supplies Santiago.

Look around. Can you see the air? No? Luckily, many of NASA's Earth-observing satellites can see what the human eye can't -- including potentially harmful pollutants lingering in the air we breathe.

Higher concentrations of trace elements and nutrients previously locked up in frozen soils (permafrost) are expected to increase as more river runoff reaches the Arctic.

A new study finds volcanic activity played a direct role in triggering extreme climate change at the end of the Triassic period 201 million year ago, wiping out almost half of all existing species.

Drought and heat put stress on plants and reduce grain yield. 

Estuaries on the south-east coast of Australia are warming at twice the rate of oceans and the atmosphere, a new study has found.

Monsoon rainfall has become more unpredictable in India.

The year to date also ranked 2nd-warmest for the globe.

A group of trees that grow fast, live long lives and reproduce slowly account for the bulk of the biomass—and carbon storage—in some tropical rainforests, a team of scientists says in a paper published this week in the journal Science.