"The government on Thursday recommended the removal of four hydroelectric dams on the Klamath River in Oregon and California to aid native salmon runs and help resolve a decades-long struggle over allocation of scarce water resources."

"TORONTO, Ontario, Canada, April 4, 2013 (ENS) – The province of Ontario is harnessing more renewable electricity from Niagara Falls through the just-completed Niagara Tunnel Project, as part of its plan to phase out its coal-fired power plants by the end of 2014."

"The Obama administration is inching ahead with a plan that would allow wastewater from fracking to be shipped on barges, fueling a debate whether it is safer than other transportation modes or risks polluting drinking water."

"A federal agency has declared that more sick and dying sea lion pups have stranded themselves on southern California beaches so far in 2013 than in the previous five years combined, but scientists are still unsure what is afflicting the mammals."

"Current climate-induced drought is slipping into a trend that scientists say resembles some of the worst droughts in U.S. history, like the Dust Bowl."

"Toxic algae blooms in Lake Erie could come more often and be more intense in coming decades thanks in part to torrential rains intensified by global warming, according to a study published in Monday’s Proceedings of the National Academy of Sciences."

"STE. GENEVIEVE, Mo. -- Ameren Missouri has spent the past four years engaged in a bitter fight with Labadie-area residents over a proposal to pile millions of cubic yards of coal ash on a plot of cropland by the Missouri River."

"GONZALES, Tex. -- In a dusty lot off the main highway in this South Texas town, Vern Sartin pointed to a collection of hose hookups and large storage tanks used for collecting wastewater from hydraulic fracturing jobs."

"Canada has become the first country to drop out of the UN convention to combat desertification."

"TRAVERSE CITY, Mich. -- The Environmental Protection Agency issued new requirements Thursday for cleansing ballast water dumped from ships, which scientists believe has provided a pathway to U.S. waters for invasive species that damage ecosystems and cost the economy billions of dollars."

"WASHINGTON -- More than 4 out of 5 Americans want to prepare now for rising seas and stronger storms from climate change, a new national survey says. But most are unwilling to keep spending money to restore and protect stricken beaches."

"Lobbying group funds research, argues products are safe despite government studies linking them to pollution."

The story of hexavalent chromium, a carcinogen, in drinking water is not over, even though Erin Brockovich's legal victory was vaunted in a film 13 years ago. Groundwater near Hinkley, Calif., is still polluted. The story of how industry clout has kept EPA delaying regulation of chromium in drinking water is a tale of the chemical industry's ability to manipulate regulation by sowing doubt. But recent highly dramatized stories on chrome-6 in drinking water may not have helped much, to the extent that they downplayed natural background levels, the importance of dose, and the statistical problems in identifying cancer clusters. The whole saga raises key issues about public relations, lobbying, regulatory politics, the legal system, environmental journalism, and the protection of public health.

"Snow-surveying crews across the Sierra are seeing bad news up close this week. California has about half a snowpack."

"HOUSTON -- Oklahoma's largest-recorded earthquake was triggered by injection wells used by the oil and gas industry, according to a report released this week."