A study of bumble bees has uncovered a potential reason for the insects' decline. By studying bumble bee exposure to ...

In India, much of the population breathes air that is 10 times more polluted than what the World Health Organization considers safe. In a study released in the Quarterly Journal of Economics, Yale ...

When volcanoes like Alaska’s Mount Spurr erupt, the ash can damage people’s lungs, smother crops and kill animals, and the harm can continue to spread long afterward.