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EPA Bans a Gas That Once Helped Save the Ozone Layer

EPA Bans a Gas That Once Helped Save the Ozone Layer

The Environmental Protection Agency has finalized a regulation limiting the use of hydrofluorocarbons, or HFCs, for a variety of industrial purposes. As a greenhouse gas, HFCs are up to 12,000 times more potent as carbon dioxide as an agent causing climate change … 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

Water Use Declining as Natural Gas Grows

Water Use Declining as Natural Gas Grows

As the U.S. has undergone a rapid and massive shift to natural gas from coal, one benefit has gone almost entirely overlooked: the amount of water needed to cool the nation’s power plants has dropped substantially. The widespread adoption of hydraulic fracturing (fracking) technology has led to dramatically higher natural gas production in the … 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 Entering New Era for Wildfires

Alaska Entering New Era for Wildfires

Alaska, the great northern frontier of America, is being reshaped by climate change. While rising temperatures are altering its character and landscape, they are also bringing the ravages of wildfires. In the past 60 years, Alaska has warmed more than twice as fast as the rest of the country, with average temperatures up by nearly 3°F. By 2050, … Read More

U.S. Summers Bringing More and More Heat

U.S. Summers Bringing More and More Heat

It’s officially summer! We have now passed the points that mark the traditional start to summer (Memorial Day), the meteorological start (June 1), and now the astronomical start, or summer solstice (June 21) — so break out those flip-flops and beach towels! Though June, July, and August usually bring the heat, for parts of the country spring felt … Read More

Pope’s Encyclical Makes Grade in Climate Science

Pope’s Encyclical Makes Grade in Climate Science

When it comes to the science of climate change, Pope Francis’ environmentally focused encyclical makes the grade, experts said Thursday. Francis makes clear in the document that humanity bears most of the blame for the warming of the planet and he lays out the main findings of climate science -- that greenhouse gases are causing global temperatures… Read More

May Continues Trend of Record Hot 2015

May Continues Trend of Record Hot 2015

On the same day that the Pope releases his much-anticipated message on the need to act on climate change, the U.S. agency in charge of keeping temperature records has announced that 2015 continues to be the warmest year-to-date on record, setting it up to potentially surpass last year as the hottest calendar year. The National Oceanic and… Read More

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Tornadoes by State The average number of tornadoes in each state between 2005 and 2014.

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