"To comply or not to comply. That’s the question now facing Texas officials regarding the Obama administration’s ambitious Clean Power Plan. The sweeping regulatory initiative, unveiled [Monday] in its final form, aims at transforming the nation’s electricity-production system to slash emissions of climate-disrupting air pollution."

"Several earthquakes shook Oklahoma on Monday as the state experiences a sharp increase in the frequency of tremors linked to wastewater disposal from gas and oil drilling, including from fracking, state and federal officials said."

"Scores of Native American demonstrators protested at the U.S. Capitol on Tuesday against a proposed $6 billion copper mine in Arizona at a site that members of the Apache tribe say is sacred."

"A dirt trail shaded by ponderosa pines drops down the slope of this small canyon below the Los Alamos Nature Center and a recreation center. The canyon became a dumping ground during the Manhattan Project. Old pipes, washing machines, culverts and other debris from the era were tossed into the canyon by nearby homeowners and Los Alamos National Laboratory staff."

"Kyle Tisdel and Samantha Ruscavage-Barz sift through rocks beside a dusty road in New Mexico's high desert, searching for remnants of life a thousand years past. With the nearest meager town of Cuba an hour away, they're off the beaten path by any standard. But to them, these dirt roads surrounding Chaco Canyon are the front lines of a monumental battle pitting ancient Pueblo culture against the modern world's thirst for oil."

New projections put sea-level rise from climate change as high as six meters (20 feet). A mapping tool from the independent research organization Climate Central shows such a rise "are striking, to say the least – the inundation of Galveston, Matagorda and Padre islands, along with cities such as Port Arthur, part of Beaumont, Galveston, Texas City, the Freeport-Lake Jackson area and part of Corpus Christi."

"Honda has earned a new Guinness World Record for fuel efficiency. In a 25 day drive across all of the European Union’s contiguous countries, a Honda Civic Tourer 1.6 i-DTEC diesel averaged 2.82 liters per 100km (100.31 miles per gallon)."

"As she knocked on the federal government's door for aid in the wake of a damaging earthquake in 2011, Oklahoma Gov. Mary Fallin (R) avoided talking about one aspect of the earthquake -- its cause."

"Environmental Defense Fund-backed studies of 30,000 Barnett Shale wells shows the EPA has vastly underestimated emissions."

"Despite reports of U.S. Catholics’ largely positive reception to Pope Francis’s beginning campaign on the issue, not everyone is optimistic that the Catholics of Texas will suddenly start trying to shut down their local coal plant."