Four days of rainfall across Colorado’s Front Range produced massive flooding that’s marooned thousands, inundated key roads, and damaged countless homes and businesses. Just how rare was this event?

Two recently remodeled buildings on UCAR's Foothills campus have earned the highest possible rating from the U.S. Green Building Council for their sustainable design.

A grand solar minimum would slow global warming but not stop it.

A rare confluence of three atmospheric patterns drove so much precipitation over Australia in 2010 and 2011 that the world’s ocean levels dropped measurably.

Scientists are zeroing in on microbes that eat carbon in the soil and release it back to the atmosphere, thereby influencing global climate.