"LAKELAND -- A hulking mountain of ash sitting inside the Lakeland city limits isn't exactly a point of pride, but city officials would rather see it stay than go."

"The twin forces of power costs and climate-change regulations are threatening Southern California's long love affair with imported water, forcing the region to consider more mundane sources closer to home."

"As the country awaits results from a nationwide safety study on the natural gas drilling process of fracking, a separate government investigation into contamination in a place where residents have long complained that drilling fouled their water has turned up alarming levels of underground pollution."

"NEW ORLEANS -- BP will no longer be responsible for cleaning up oil that winds up on shores of the Gulf Coast unless officials can prove it comes from the company's well that blew out in 2010, causing the worst offshore spill in U.S. history, according to a plan approved by the Coast Guard and obtained by The Associated Press on Tuesday."

"CHASE, Wisc. -- Federal environmental regulators have joined an investigation into drinking water supplies tainted by elevated levels of a chemical used to make plastic products.

The problem in this Oconto County community first was detected last year at Sunnyside Elementary School and prompted school authorities to begin supplying bottled water to students, teachers and staff.

But tests this summer showed that the same contaminant was turning up in private homeowner wells, leading investigators to question whether the situation was more widespread.

"CANNES, France -- The leaders of the G-20 group of major economies wrapped up their two-day annual meeting on Friday with promises to finance the fight against climate change through the Green Climate Fund, protect the marine environment from oil spills, and promote low-carbon development strategies.

In their joint Communique, the government leaders said, 'We are committed to promote sustainable development and green growth and to continue our efforts to face the challenge of climate change.'

"At the Conowingo Hydroelectric Dam in northeast Maryland, the barbarians are at the sluice gates.

Sediment, millions of tons of it, has flowed down the 440-mile Susquehanna River for more than 80 years and massed at the dam. And now a reservoir built to hold it is filling up.

"Efforts to reduce pollution of the Chesapeake Bay are starting to pay off, a major new study says, finding that despite weather-driven ups and downs, the 'dead zone' that stresses fish and shellfish every summer has actually shrunk, on average, in recent years."

"The Environmental Protection Agency on Thursday released the outlines of its long-awaited probe into whether hydraulic fracturing -- the unconventional drilling technique that's led to a boom in domestic natural gas production -- is contaminating drinking-water supplies. Investigators will try to determine the impact of large-scale water withdrawals, aboveground spills of drilling fluids, and the fracturing process itself on water quality and quantity in states where tens of thousands of wells have been drilled in recent years."