Porcine epidemic diarrhea virus is spreading throughout farms in the U.S. Not only does it sound disgusting; it is disgusting.
Urban trees suck up soot and other kinds of fine particulate pollution, and that helps keep us healthy and alive, researchers find.
The country is cracking down on polluters whose activities harm or kill others, and it's willing to impose the harshest possible penalty.
An estimated 25,000 bumblebees were killed in a Target parking lot after landscapers sprayed blooming trees with insecticide. Happy Pollinator Week!
As soon as next week, the president is expected to unveil new initiatives to tackle climate change -- including long-awaited rules on power plants.
The city aims to cut net greenhouse gas emissions to zero by 2050. But energy-sucking indoor marijuana operations could throw the effort off course.
The Army Corps of Engineers says it won't review the climate-changing impacts of plans to export coal from Northwest ports, a blow to enviros and many political leaders in the region.
Climate change "is the global threat of our time," Obama said in a big speech at the Brandenburg Gate. Fitting, as the weather in Berlin was an unseasonably hot 92 degrees.
Heavy farm runoff and heavy rainfall could lead to a New Jersey-sized dead zone in the Gulf of Mexico this year. The news for Chesapeake Bay is more upbeat.