Since the end of the 20th century, air pollution from most U.S. sources has decreased, but emissions from wildland fires have ...

Sustainability sounds great in theory — until you’re trying to figure out how to make it work in a corporate setting.

According to Samset, China 's cleanup has likely added about 0.05°C (0.09°F) to the global temperature increase per decade and contributed 0.07°C of total warming since 1850. "When we started looking ...