This year marks the 50th anniversary of the Clean Air Act, passed by the United States Congress in 1970. After 50 years of amendments, advances in research and technology, and administration changes, the UN Environment Programme takes a look at how the country’s air holds up today. Read More.
By Stephen Lester. Nearly 10 months ago, a Norfolk Southern train with more than 150 cars, many of which contained toxic chemicals, derailed in East