Earth and Atmospheric Sciences

How powerful was February’s meteor that crashed into Russia? Strong enough that its explosive entry into our atmosphere was detected almost 6,000 miles away in Lilburn, Ga., by infrasound sensors – a full 10 hours after the meteor’s explosion.

The presence of oily organic materials on atmospheric particles doesn't slow the formation of droplets that form clouds.

Revealing for the first time that certain volatile organic gases can promote cloud formation in a way never considered before by atmospheric scientists.

Using genomic techniques, researchers have documented substantial populations of microorganisms in the middle and upper troposphere.

Georgia Tech researchers have created a hydrological model that forecasts flooding in Pakistan as many as ten days in advance.

Scientists have dramatically expanded the amount of information available on the El Nino-Southern Oscillation, a Pacific Ocean climate cycle that affects climate worldwide.

The rover has scooped up its first Martian soil sample, which has been examined by the Sample Analysis at Mars instrument (SAM).

Shallow source depth produces larger pumice. Deep fragmentation results in fine-grain ash.

Josef Dufek is attempting to learn more about the past atmospheric conditions by analyzing ancient volcanic eruptions and surface observations by the Mars rover Spirit.