Rivers in some of the world's most populous regions are losing water, according to a new comprehensive study of global stream flow.

NCAR researchers are looking at how new generations of super-fast Graphical Processing Units (GPUs) and multicore chips, such as the Cell Broadband Engine, can be used in atmospheric models.

The threat of global warming can still be greatly diminished if nations cut emissions of heat-trapping greenhouse gases by 70 percent this century, according to a new analysis.

The 2008 Super Tuesday tornado outbreak swept through several southern states and the lower Ohio Valley, killing 57 people. NCAR scientist Julie Demuth helped the National Weather Service assess the societal impacts of the deadly storms.

As part of its Walter Orr Roberts Distinguished Lecture series, UCAR will present a special lecture next week by NASA scientist James E. Hansen, one of the nation's most respected experts on climate change.