"Here's one advantage to armadillos' steady northward march across the Southeast United States: They're awfully handy to have as bait if, say, you're a wildlife biologist looking to trap an alligator that has inexplicably settled into your local pond in north Georgia." Part of the explanation for the armadillo's northward migration is probably climate change.

"Millions of barrels of salty, toxic wastewater from natural-gas wells in Pennsylvania are coming into Ohio despite efforts to keep it at bay."

"As record floodwaters along the Missouri River drench homes and businesses, concerns have grown about keeping a couple of notable structures dry: two riverside nuclear power plants in Nebraska."

"A major offshore Arctic oil spill could severely challenge the Coast Guard, with no available infrastructure to base rescue and clean-up operations, the Coast Guard commandant said on Monday."

"The Obama administration on Monday extended its ban on mining on 1 million acres of federal lands near the Grand Canyon by six months, as it heads toward a possible long-term moratorium on mining in the area."

In the race for the GOP presidential nomination, even candidates who previously accepted climate science and backed cap-and-trade are backtracking and changing position as fast as they can.

"The American public is less likely to believe in global warming than it was just five years ago. Yet, paradoxically, scientists are more confident than ever that climate change is real and caused largely by human activities."

"The Supreme Court ruled [Monday] that six states cannot, for now, try to limit emissions of greenhouse gases under federal common law. The court ruled 8-0 -- Justice Sonia Sotomayor was recused -- that the Clean Air Act and the Obama administration's efforts to regulate emissions had displaced the states' federal common law argument."