A leak at a nuclear power plant went undetected for weeks, allowing up to 2,000 gallons of oil to flow into Lake Michigan.

Climate change and invasive mussels may have made Lake Erie a more inviting host for toxic bacteria in recent years, suggesting that ambitious goals are needed for reducing phosphorus runoff that f

WASHINGTON (AP) — A surprising hot spot of the potent global-warming gas methane hovers over part of the southwestern U.S., according to satellite data.

WASHINGTON (AP) — The Chesapeake Bay region would reap an additional $22.5 billion a year from improved hurricane protection, crab and fish production and climate stability if the Obama administrat

Climate change has its sights on its next victim, and it's one of America's favorite vacation spots.

NAIROBI, Kenya (AP) — Corrupt Kenyan wildlife rangers are killing poachers to cover up the officers' collusion with the criminals slaughtering the country's elephants, a rights group alleges.

Michigan will take a look at its radioactive waste disposal standards after criticism grew over an out-of-state company dumping fracking byproducts in a landfill near Detroit.

Greenland and Antarctica are home to the two largest ice sheets in the world, and a new report released Wednesday says that they are contributing to sea level rise twice as much as they were just f

Cities are almost always hotter than the surrounding rural area but global warming takes that heat and makes it worse.

NAIROBI, Kenya (AP) — Poachers killed an estimated 100,000 elephants across Africa between 2010 and 2012, a huge spike in the continent's death rate of the world's largest mammals because of an inc