Grist notes a Dec. 12 report on Nature:

Cold temperatures have kept crabs out of Antarctic seas for 30 million years. But warm water from the ocean depths is now intruding onto the continental shelf, and seems to be changing the delicate ecological balance. An analysis by [marine ecologist Craig] Smith and his colleagues suggests that 1.5 million crabs already inhabit Palmer Deep, [a] sea-floor valley… And native organisms have few ways of defending themselves. "There are no hard-shell-crushing predators in Antarctica," says Smith. "When these come in they’re going to wipe out a whole bunch of endemic species."

The US National Intelligence Council (NIC) has issued a new report, "Global Trends 2030: Potential Worlds," that emphasizes the rise of China and the risk of catastrophic climate change. An Associated Press summary Dec. 10 says the report finds global terrorism will recede along with the US military footprint in Iraq and Afghanistan, but cyber-attacks will be a growing concern. "The spectacular rise of Asian economies is dramatically altering...US influence," said NIC chairman Christopher Kojm. While the report sees the potential for US-China cooperation on global security, it also warns of resource struggles leading to instability. Under the heading "Stalled Engines," in the "most plausible worst-case scenario, the risks of interstate conflict increase," the report said. "The US draws inward and globalization stalls." The section "Black Swans" foresees extraordinary events that can change the course of history—such as a severe pandemic that could kill millions in a matter of months, or more rapid climate change. The report is optimistic, however, on the prospects for US energy independence. "With shale gas, the US will have sufficient natural gas to meet domestic needs and generate potential global exports for decades to come," it predicts.

A Dec. 5 public hearing on the proposed re-route of the Keystone XL Pipeline at the Boone County Fairgrounds in the central Nebraska town of Albion was unexpectedly packed with nearly 1,000 people who showed up to sound off on the project. The lone hearing was hosted by the Nebraska Department of Environmental Quality—the only opportunity for impacted residents to weigh in on the DEQ's findings on TransCanada's revised plan for an oil pipeline through the state on its way to Gulf Coast refineries. Oglala Lakota Nation vice president Tom Poor Bear was among those who expressed concerns about groundwater contamination from the project. TransCanada says it has altered the pipeline's path through Nebraska to avoid the environmentally sensitive Sand Hills and some town water wells.

US-incorporated energy firm Lone Pine Resources is challenging Quebec’s moratorium on fracking under terms of the North American Free Trade Agreement, and demanding more than $250 million in compensation. The company—headquartered in Calgary but incorporated in Delaware—officially notified the US Securities and Exchange Commission that on Nov. 8 it filed a notice of intent to sue the Canadian government under NAFTA's controversial Chapter 11. Quebec lawmakers in June approved legislation, Bill l8, that imposed a moratorium on hydraulic fracturing pending further study on its environmental impacts. Lone Pine cites Chapter 11's Article 117, on investor damages, in its claim for the loss of what it calls a "valuable right...without due process, without compensation and with no cognizable public purpose."

US Attorney General Eric Holder announced Nov. 15 that British Petroleum (BP) has agreed to pay a record $4.5 billion in penalties and plead guilty to felony misconduct for its role in the devastation caused by the 2010 Deepwater Horizon oil spill. Holder emphasized that the settlement includes a roughly $1.25 billion criminal fine, and announced that two BP supervisors aboard the Deepwater Horizon during the spill have been charged with 23 criminal counts—including manslaughter, a result of the 11 workers killed in the April 2010 explosion. As part of the agreement, BP has agreed to plead guilty to 11 of the felonies related to the workers' deaths, a charge of obstruction of Congress and two misdemeanors.

Paul M. Barrett has made a splash (forgive the pun) on Bloomberg Businessweek with his piece (well on its way to meme-dom) "It's Global Warming, Stupid." He opens:

Yes, yes, it's unsophisticated to blame any given storm on climate change. Men and women in white lab coats tell us—and they're right—that many factors contribute to each severe weather episode. Climate deniers exploit scientific complexity to avoid any discussion at all.

In case you were wondering, the oil and energy industry are hedging their bets by funding both candidates (gee, what a surprise)—but not equally. Politico noted back in April that BP has favored Obama: 

BP and its employees have given more than $3.5 million to federal candidates over the past 20 years, with the largest chunk of their money going to Obama, according to the Center for Responsive Politics. Donations come from a mix of employees and the company's political action committees — $2.89 million flowed to campaigns from BP-related PACs and about $638,000 came from individuals.

Arctic sea ice cover this month fell to the lowest summer minimum extent since satellite records began in 1979, according to the National Snow and Ice Data Center (NSIDC). "We are now in uncharted territory," said NSIDC director Mark Serreze. "While we've long known that as the planet warms up, changes would be seen first and be most pronounced in the Arctic, few of us were prepared for how rapidly the changes would actually occur."