Recovery of the hole has varied from year to year, due in part to the effects of volcanic eruptions

Hot, rocky planets may change their composition if rock components vaporize in steam atmospheres that escape to space

"This is the first clear evidence of a discernible human fingerprint on physiological vegetation changes at the continental scale."

However, climate engineering does not remove the need to reduce greenhouse gas emissions

With the move from burning coal to natural gas and low-sulfur coal and an increase in the use of scrubbers, only about 25 percent as much atmospheric sulfur is available today, compared to 40 years ago

Results reverse the commonly accepted idea that the early Earth had a thicker atmosphere to compensate for weaker sunlight

Raindrop splash is a surprise source of fine soil particles in the atmosphere

Researchers find biological evidence linking air pollution to intrauterine inflammation, a condition associated with adverse pregnancy and child outcomes

For environmental researchers, the Gulfstream-V (GV) HIAPER research jet is like Red Bull—it gives them wings.

Team adapts a solar-powered process that converts carbon dioxide into carbon so that it produces carbon nanotube