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Dire Climate Warning Raises Questions, Not Answers

Dire Climate Warning Raises Questions, Not Answers

NASA’s former climate chief has issued a stark new study that finds that the world’s current climate goal could be inadequate and may not prevent catastrophic losses from rising seas, ocean temperatures and changes in global weather. But the extreme nature of his projections has some scientists questioning the methods he used and the results … Read More

Arctic Sea Ice Volume Rebounds, But Not Recovering

Arctic Sea Ice Volume Rebounds, But Not Recovering

Over the last few decades, and particularly in recent years, the area of the Arctic Ocean covered by a skin of sea ice has steadily shrunk. But it’s not just this extent that matters — the volume of sea ice, which takes into account its thickness, is also important, but traditionally much more difficult to measure. The 2010 launch of the European… Read More

Russia, U.S. Sign Fishing Ban in Arctic as Sea Ice Melts

Russia, U.S. Sign Fishing Ban in Arctic as Sea Ice Melts

The United States, Russia and other Arctic nations signed an agreement on Thursday to bar their fishing fleets from fast-thawing seas around the North Pole, an agreement delayed more than a year by tensions over Ukraine. The accord, also signed in Oslo by the ambassadors of Canada, Norway and Denmark, is a response to global warming.… Read More

Two Maps Show Greenland’s Sudden Melt Season Onset

Two Maps Show Greenland’s Sudden Melt Season Onset

It appears that Greenland’s melt season is making up for lost time. After a cool spring kept Greenland’s massive ice sheet mostly solid, a (comparatively) warm late June and early July have turned half the ice sheet’s surface into liquid, well outside the range of normal for this time of year. Despite the ice sheet’s remote location, its slushy… Read More

2015 Arctic Sea Ice: How Low Will It Go?

2015 Arctic Sea Ice: How Low Will It Go?

The Fourth of July weekend wasn’t just about fireworks and cookouts, it also marked the end of a key period of summer melt in the Arctic that can determine how low sea ice goes for the year. The floating ice cap has been on a steady downward trajectory for decades, thanks to global warming, and in recent years it has hit record lows with the added … Read More

Rapidly Acidifying Arctic Ocean Threatens Species

Rapidly Acidifying Arctic Ocean Threatens Species

Parts of the Arctic Ocean within the next 10 years could reach levels of ocean acidification that would threaten the ability of marine animals to form shells, new research suggests. Die-offs in such creatures could have ramifications up the food chain in areas that include some of the most productive fisheries in the world and provide a preview… Read More

Alaska’s Glaciers Seen as Major Source of Sea Level Rise

Alaska’s Glaciers Seen as Major Source of Sea Level Rise

The ice that tumbles into the ocean along Alaska’s coastline often makes for dramatic images that show one of the ravages of climate change – melting tidewater glaciers that contribute to sea level rise. But a new study finds that far more meltwater is flowing into the sea from a similar, if less frequently photographed source – inland glaciers. … Read More

Bad News Keeps Flowing From Antarctica

Bad News Keeps Flowing From Antarctica

The massive shelves of ice that ring Antarctica have been shrinking over the past couple of decades, and that could have grave implications for sea level rise. It’s not the ice shelves themselves that pose a problem: they’re mostly afloat, so when they melt or dump massive icebergs, it doesn’t affect water levels any more than melting ice cubes … Read More

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20 Big U.S. Cities that Should Worry About Sea Level Rise 20 U.S. cities with populations over 300,000 that are most likely to be dramatically affected by sea level rise.

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