"Last week the University of Texas provost announced he would re-examine a report by a UT professor that said fracking was safe for groundwater after the revelation that the professor pocketed hundreds of thousands of dollars from a Texas natural gas developer. It's the latest fusillade in the ongoing battle over the basic facts of fracking in America."

"A byproduct of the ongoing heat wave, increased smog, may ultimately bring more and longer-lasting annoyance than the heat itself. The heat wave will eventually break, but Wichita’s smog reports probably already have been damaged to the extent of triggering some mandatory -- and potentially costly and inconvenient -- pollution controls like those in other big cities."

"Two Canadian biologists have reported sighting a handful of grizzly bears and hybrid grizzly/polar bears at unusually high latitudes in the Arctic, indicating that the interbreeding of the two bear species is becoming more common as the climate warms and grizzlies venture farther north."

"RICHMOND, Va. -- When a team from the Nuclear Regulatory Commission meets with the public Thursday, the prickliest aspect of ending Virginia's 30-year ban on uranium mining will be up for discussion: processing the radioactive ore to create fuel for nuclear power plants."

"STONINGTON, Me. — Lobsters are flooding the market here. A combination of warm weather and good conservation techniques has led to what could end up being a record lobster harvest across Maine waters."

"Canada's Enbridge Inc. on Sunday raced to repair a major pipeline that spilled more than 1,000 barrels of oil in a Wisconsin field, provoking fresh ire from Washington over the latest in a series of leaks."

"Little progress has been made in combating many types of food-borne illnesses in recent years, according to new federal data, an outcome that food safety advocates say underscores the need to put into place the landmark food-safety bill signed by President Obama more than a year ago."

"TransCanada, the company seeking to build the 1,700-mile Keystone XL pipeline from oil sands formations in Alberta to Gulf Coast refineries, received the final go-ahead from the federal government on Friday for the southern leg of the project."

"Richard Muller, a cantankerous but creative physicist at the University of California, Berkeley, who once derided climate change research, then dove in with his own reconstruction of terrestrial temperature changes and confirmed substantial warming, has now concluded that recent warming is 'almost entirely' human caused."