In early spring, George Okoko was perched on a ledge 15 feet up a crumbly cliff, trying to whack off a basketball-size piece of rock with a hammer and chisel. The locale was suburban Berkeley Heights, N.J. The rock was basalt, a common product of volcanism. This batch formed some 200 million years ago, during vast eruptions that occurred as Europe slowly...

Climate change is transforming dust storms—a natural phenomenon in the Middle East—into a more frequent and widespread threat to health and economies throughout the region, a new study shows.

Firefighters and local residents battled a massive wildfire on the outskirts of Nepal's capital Thursday as the Himalayan republic endures a severe fire season authorities have blamed on a heat wave.

The number of people who have lost their lives in devastating floods in Kenya since March has risen to 188, with dozens still missing, the interior ministry said on Thursday.

The Colorado River's future may be a little brighter than expected, according to a new modeling study from CIRES researchers. Warming temperatures, which deplete water in the river, have raised doubts the Colorado River could recover from a multi-decade drought. The new study fully accounts for both rising temperatures and precipitation in the Colorado's...

The Environmental Protection Agency (EPA) is underestimating methane emissions from landfills, urban areas and U.S. states, according to a new study led by researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS).