Causescommons.wikimedia.org A ‘new era of air pollution' in the tropics could have a huge toll Increasingly bad air in big cities is expected to kill hundreds of thousands in coming years if stronger controls are not put in place.
Solutions Which trees should planners plant in cities to fight pollution? Placing trees between roads and pedestrians can make life way healthier, but some trees perform their task better than others.
As Biden prepares to block the sale of U.S. Steel to Nippon Steel, pollution concerns persist in Pennsylvania
A Pennsylvania fracking company with more than 2,000 environmental violations selected for federal environmental justice funding
