Human destruction of wilderness areas has added to the pollution that puts millions of people on three continents at risk of waterborne diseases.
Massively increased ice melt in the high Himalayas because of climate change could seriously jeopardize the flow of water for billions of people in Asia.
Global warming will leave people in the Western states of the U.S. exposed to increasingly extreme temperatures that could seriously affect electricity generation.
Reduced monsoon rainfall and increased river flow are two extremes that new research has linked to man-made impacts on climate caused by air pollution.
Scientists have produced a handbook that shows how better river management can mean more breeding success for migratory fish and more electricity from a vital source of renewable energy.
More than half of the country's rivers and streams are unable to support healthy populations of aquatic insects and other creatures, a survey of nearly 2,000 locations by the Environmental Protection Agency reported Tuesday.
An Argentine court has fined the country's environmental secretary and two politicians for failing to clean up the polluted Riachuelo River that winds through Buenos Aires, a move unique and commendable for its accountability of politicians to citizens' concerns.
Turns out polar bears aren't the only land mammals struggling with global warming. Many of the world's most-used rivers, from the Colorado to the Ganges, have been losing water for the last 50 years. So, in addition to coping with floods, storms, deserts and mass extinction, we could all die of thirst. Happy Earth Day.