Air pollution

Smog is nasty enough in the atmosphere, and now research suggests it damages human skin cells as well.

Beijing's efforts to control air pollution help, but aren't main influence on pollution levels.

Air pollution takes up flower scent molecules used by bees to find food.

Higher fuel prices may reduce deaths related to crashes and air pollution.

Making solar cells produces fewer air pollutants than coal and oil power plants.

Traffic restrictions recently imposed in Beijing reduced the city’s air pollution over a three-day period.

Previously unknown particles around clouds could complicate global warming calculations.

Pollution high contributor to disease, especially in developing countries.

Farm town suffers from urban pollutants trapped by local mountains.

Rising temperatures fueling droughts that are killing trees in Sierra Nevada.