Dry dust reacts with air pollutants to form dewy particles whose sunlight-reflecting and cloud-altering properties are unaccounted for in atmospheric models. SAN FRANCISCO -- Dry dust reacts with air ...

CORRECTION: The credit line on the photo accompanying this story was updated on May 31, 2016, to reflect the correct photographer. The photo is credited to Gilles Martin/Paul Scherrer Institute, not ...

Scientists have discovered a surprising new chemical compound in Earth's atmosphere that reacts with sulfur dioxide to form sulfuric acid, which is known to have significant impacts on climate and ...

Dr Mike McDonagh explains the chemical and physical processes involved in forming lead dioxide and pure lead in lead-acid battery plates.

Acid rain from the Chicxulub asteroid impact, which happened roughly 65 million years ago and is linked to the death of the dinosaurs, could have created a mass extinction in the oceans, new ...

Hoof it through the national parks of the western United States—Joshua Tree, the Grand Canyon, Bryce Canyon—and breathe deep the pristine air. These are unspoiled lands, collectively a great American ...