How does the U.S. winter of 2013–14 rank against its predecessors? And was it a harbinger of more cold winters to come for parts of the country, or simply an outlier at a time of largely warming winters?

A nuclear exchange, even if limited to one region, would have severe atmospheric impacts.

Scientists link coal, oil, and biomass to a layer of sulfates high above Asia.

A recent conference marked the 25th anniversary of a crucial international meeting, organized with support from UCAR, that brought together atmospheric sciences from Taiwan and mainland China for the first time in decades.

UCAR has signed an agreement with NSF to renew its management of NCAR for five years