Microplastics are turning up in unusual places increasingly often as they filter into nearly every facet of life on Earth. They’ve been discovered in drinking water, food, air and even in blood. Now, ...

A study published on January 25 in the journal Science shows how the presence in the atmosphere of ultrafine aerosol particles (less than 50 nanometers in diameter) can intensify the cloud formation ...

Scientists have observed that ammonia in penguin guano is directly related to cloud formation in Antarctica. Gaseous ammonia reacts with gaseous sulfur compounds in the Antarctic atmosphere to form ...