Sea-Level Rise: What the Experts Expect. In the long run, sea-level rise will be one of the most serious consequences of global warming. But how fast will sea levels rise? Model simulations are still associated with considerable uncertainty - too complex and varied are the processes that contribute to the increase. A just-published survey of 90 sea-level experts from 18 countries now reveals what amount of sea-level rise the wider expert community expects. With successful, strong mitigation measures, the experts expect a likely rise of 40-60 cm in this century and 60-100 cm by the year 2300. With unmitigated warming, however, the likely range is 70-120 cm by 2100 and two to three meters by the year 2300. Real Climate

Blogging Arctic Alaska's Ice Age, One Bone at a Time. It's no secret that the Northwest Arctic is a gold mine when it comes to discovering remnants of the past. Especially when it comes to finding ice-age-era animal bones. But recently National Park Service archeologist Jon Hardes started blogging about finds in the area to keep residents engaged in the cause. He's using the online forum to put a call out to locals who find old bones to bring them in to his office for identification. Alaska Dispatch

Arctic at Risk from Invasive Species. As the Arctic ice melts, new shipping routes are opening up for tourism, mining and other commercial purposes, cutting journey times and fuel costs. And as Christopher Ware reports, a new danger arises - invasive alien species disrupting fragile Arctic ecosystems. The Ecologist

Arctic Storms Speed Up Release of Methane Plumes. A stormier Arctic could fast-track the greenhouse gas into the atmosphere, potentially accelerating global warming. "Significant quantities of methane are escaping the East Siberian Shelf as a result of the degradation of submarine permafrost," says Natalia Shakhova of the University of Alaska in Fairbanks. She and her team collected data - at a great cost - to show that vast areas are releasing plumes of methane gas, which is escaping into the atmosphere. New Scientist

New DoD Arctic Strategy Seeks Naval Equipment, Infrastructure. The Pentagon on Friday unveiled a broad-ranging Arctic strategy that calls for examining new types of naval equipment and infrastructure needed in the region over several decades. Defense Secretary Chuck Hagel spoke about the strategy at the Halifax International Security Forum in Canada. Defense News

Murkowski Responds to Pentagon Arctic Strategy Announcement. Senator Lisa Murkowski today responded to the release of the United States Department of Defense Arctic Strategy showing it wants to be 'very active and very involved' in the region, saying: "I welcome the Department of Defense's increased attention to, and engagement in, the Arctic. All components of the U.S. Government need to be involved to make the Arctic a national priority and our Armed Forces play a vital role toward that end.  There is a tremendous opportunity in front of us for increased international cooperation, collaboration, and partnerships in the Arctic." Senator Lisa Murkowski

U.S. Plans to Keep Pace in Race for Arctic Resources. The U.S. military is looking for ways to expand operations in the vast waters of the Arctic, as melting ice caps open sea lanes and other nations such as Russia compete for lucrative oil and gas deposits. But the effort will take money and resources to fill the broad gaps in satellite and communications coverage, add deep-water ports and buy more ships that can withstand the frigid waters or break through the ice. CBC News 

Canada Welcomes U.S. Arctic Strategy. A new Arctic strategy released by the U.S. is welcome and "entirely consistent" with Canada's approach in the region Defense Minister Rob Nicholson said Saturday. Speaking as part of a panel at the Halifax International Security Forum Nicholson said the strategy outlined Friday by U.S. Defence Secretary Chuck Hagel focuses domestically on the north within a context of international cooperation. Brampton Guardian