For years, controversy has been raging over what little 'science' there is on questions related to the environmental and health impacts of the hydraulic fracturing boom. The scientific controversies may be a proxy for the conflict over the gas-extraction method itself. Billions of dollars are at stake, the debate is getting ever more intense, and its intensity challenges the objectivity of scientists, government regulators, and journalists.

"SEATTLE--The vessel designated to act as a crucial oil spill containment system in Arctic waters has obtained Coast Guard  approval to meet less rigorous weather standards than originally proposed. But, less than two weeks before drilling off Alaska's northern coast is due to begin, a series of troubling construction delays have left the Arctic Challenger without federal certification."

"The United States is posting rapid growth in the waste of natural gas in new oil fields where the fuel is either burned or vented into the atmosphere.  Experts say the process damages the environment and fails to maximize the return to investors."

"Four years ago, something started to change. First it was slow, and then this past month that change became dramatic. Coal now generates just 34 percent of our electricity, down from about 50 percent just four years ago."

"Shell has asked the Environmental Protection Agency to loosen air pollution requirements for its Discoverer drill rig, which is planning to begin exploratory drilling operations off the North Slope of Alaska early next month."

"Nationwide Mutual Insurance Co. has become the first major insurance company to say it won't cover damage related to a gas drilling process that blasts chemical-laden water deep into the ground."

"ANCHORAGE -- BP has indefinitely suspended a $1.5 billion offshore oil project in Alaska due to cost overruns and technical setbacks, a company spokeswoman said [last] Monday."

"A dispute between Canadian pipeline giant Enbridge Inc. and a small Colorado operator is flaring into a political showdown over whether U.S. domestic production will be squeezed out by oil sands crude flowing from across the northern border."

"Despite promises from the nuclear industry to regulators and consumers that they learned from mistakes of the past, the nation's first two nuclear reactor projects built from scratch in 30 years are headed toward hundreds of millions of dollars in cost overruns and months, if not years, of delays."

"The wind power industry, which has been one of the nation’s fastest growing energy sectors, is facing layoffs and factory closings as a federal subsidy nears an end."