A trifecta of climate change, hydropower dams and illegal fishing are threatening the Tonle Sap, and the people who rely on its fish.
Twenty years ago, pollution draining into Lake Tahoe were reducing the lake's clarity by one foot per year. People visiting Lake Tahoe used to be able to see over 97 feet into the water, but by 1997, people could only see 64 feet -- an all-time low.
After years of meager rains and scorching summers, the wettest winter in a generation has revived Iraq's famous rivers and filled its lakes, bringing welcome relief to a country facing severe water challenges in the era of climate change.
Gov. Jerry Brown, alarmed by reports that climate change is dramatically increasing fire risk, on Thursday ordered an all-out attack by scientists, land managers, industry and the public on the dangerous conditions that helped spread last year's devastating wildfires.
Warming global temperatures have helped boost the growth of freshwater plants like cattails in the world's lakes in recent decades. Now, scientists have found that this surge in aquatic plant growth could double the methane being emitted from lakes - already significant sources of methane - over the next 50 years.
Harriet Washington's fascination with human toxicity dates back to her time working at a Poison Control Center in upstate New York.
Lessons from environmental and economic restoration efforts in the Ruhr Valley could help usher Appalachia into a new era.
By keeping Americans focused on the climate benefits of gas vs. coal, industry seeks to delay a broader debate of the deficits of gas vs. renewables.
Study finds decreasing lead in topsoil coincides with reductions in children's blood levels, which suggests playing around the dirt may be an important source of the toxic for children