Mercury is contaminating the Grand Canyon's fish and wildlife
August 26, 2015, 1:45 p.m. by Jaymi Heimbuch
One of the world's most loved natural wonders is getting its fill of pollution.
Spending hours staring at moss is more thrilling than you might think
August 24, 2015, 8 a.m. by Catie Leary
Olympic National Park's Hoh Rain Forest boasts a Hall of Mosses that brings in moss lovers from around the world.
How do you clean up a contaminated river?
August 13, 2015, 10:10 a.m. by Stephanie Pappas, LiveScience
Officials are working to stem the flow of heavy metal-laden wastewater in Colorado.