A major new international study shows that the impact of climate change is apparent in nearly all aspects of the climate system with the potential for major impacts on society and vulnerable ecosystems.

The Southern Ocean is indeed a significant carbon sink — absorbing a large amount of the excess carbon dioxide emitted into the atmosphere by human activities — according to a new study led by NCAR.

Scientists have reconstructed Earth's climate in the 24,000 years since the last ice age, highlighting key drivers of climate change and the influence of human activity.

Warming temperatures near Earth's surface are playing an increasing role in pushing up the height of the tropopause.

The massive columns of smoke generated by a nuclear war would alter the world’s climate for years and devastate the ozone layer, endangering both human health and food supplies, new research shows.