In the wake of the Louisiana oil spill, Florida's Sen. Bill Nelson (D-Orlando) called for President Barack Obama to reverse his recent executive order to open up areas of the Gulf of Mexico to offshore oil and gas exploration. Nelson also introduced legislation to stop exploration in the Gulf pending an investigation into the Deepwater Horizon incident. The bill would stop the Interior Department from developing a new five-year plan for Gulf drilling and exploration in the Outer Continental Shelf. "Stop the five-year plan on drilling on the offshore continental United States until we get to the bottom of this," he told CNN April 30. (Florida Today, May 1)

Bird conservationists fear the spreading Deepwater Horizon oil spill in the Gulf of Mexico will affect not only local birdlife but migratory bird populations as far north as Alaska, and as far south as South America. The spill, now 100 miles long by 48 miles wide, is being pushed onshore by the prevailing southeast winds and is expected to hit the Louisiana's Chandeleur Islands imminently.

The World People's Conference on Climate Change and the Rights of Mother Earth (CMPCC) at the central Bolivian city of Cochabamba closed on Earth Day, April 22, issuing several resolutions, including: that the UN adopt a Universal Declaration on the Rights of Mother Earth; that an International Committee be organized to hold a global referendum on climate change on Earth Day 2011; that the industrialized nations provide annual financing equivalent to 6% of their GDP to confront climate change in the developing world; and that an International Tribunal on Environmental and Climate Justice be created, with its seat in Bolivia. The conference called for a new global organization to press for these demands, tentatively dubbed the World Movement for Mother Earth—or, by its Spanish acronym, MAMA-Tierra.

The Obama administration has delayed release of its new Nuclear Posture Review to at least the end of March, but anonymous officials widely quoted in the media say it will call for "dramatic reductions" in the US nuclear arsenal. Release of the NPR was originally slated for December, and the repeated postponements have sparked much speculation on possible meaningful steps towards the nuclear-free world that Obama set forth as a goal in his Prague speech last April. However, anonymous officials (almost certainly being authorized by the White House to float trial balloons to the press) also say the administration has ruled out pledging that the US will never initiate a nuclear first strike. (BBC News, AlJazeera, March 2; Global Security Newswire, March 1; NYT, Feb. 28)

The Native Alaskan coastal village of Kivalina, its lands rapidly eroding, is appealing a lawsuit against oil, power and coal companies, charging that climate change endangers their community. The town of Kivalina and a federally recognized tribe, the Alaska Native village of Kivalina, filed the case in federal court in San Francisco in 2008, but it was dismissed in October. The appeal has been filed with the Ninth US Circuit Court of Appeals. ExxonMobil and BP are among two dozen defendants named in the suit.

Sea ice in Canada's Arctic is melting faster than previously expected, the lead investigator in Ottawa's largest climate-change study yet said Feb. 5—raising a worst-case scenario of an ice-free Arctic by 2013. University of Manitoba professor David Barber, leader of the Circumpolar Flaw Lead System Study, said "It's happening much faster than our most pessimistic models suggested."

The US and Russia have reached an agreement for the first nuclear weapons reduction treaty since 1991, officials said Feb. 1. The landmark treaty, which will replace the recently expired Strategic Arms Reduction Treaty (START), will include significant reductions in both the number of deployed nuclear weapons as well as the number of nuclear-delivery systems. US Assistant Secretary of State Rose Gottemoeller is in Paris to finalize the treaty after an agreement in principle was reached last week between US President Barack Obama and Russian President Dmitry Medvedev.

President Barack Obama is set to boost funding for nuclear weapons programs next year, even as his administration promotes nonproliferation and pledges to reduce the world's stockpile of nuclear arms. The new White House budget request seeks more than $7 billion for the Energy Department's National Nuclear Security Administration (NNSA), an increase of $624 million from FY 2010.