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NASA maps summer melt of Greenland Ice Sheet

NASA maps summer ice melt in GreenlandNASA's Operation IceBridge has been mapping summer ice melt of the Greenland Ice Sheet since Aug. 25 using a B200T King Air aircraft.

The flights will go through Sept. 21, with repeat paths to be flown in the spring to monitor seasonal changes in the elevation of the ice sheet.

"We started to mount these summer campaigns on a regular basis two years ago," Joe MacGregor, IceBridge's deputy project scientist and a glaciologist with NASA's Goddard Space Flight Center in Greenbelt, Maryland, said in a press release. "If the flights go as expected, the result will be a high-quality survey of some of the fastest melting areas in Greenland and across as much of the island as possible."

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Sea salt around the world is contaminated by plastic, studies show

Se salt around world contaminated by plastics

Sea salt around the world has been contaminated by plastic pollution, adding to experts’ fears that microplastics are becoming ubiquitous in the environment and finding their way into the food chain via the salt in our diets.

Following this week’s revelations in the Guardian about levels of plastic contamination in tap water, new studies have shown that tiny particles have been found in sea salt in the UK, France and Spain, as well as China and now the US.

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Climate Change Speeds Erosion With Huge Storms

Climate change speeds erosion

As Hurricane Irma careers into Miami Beach’s neighborhood, the recently completed project is emblematic of the increasingly expensive chasm between what beaches are supposed to be and what vacationers and property-owners want them to be. And global warming is fast expanding that gulf.

It becomes “erosion” only when you want to keep something the way it is, according to Robert Young, director of the Program for the Study of Developed Shorelines at Western Carolina University. He and other experts call changing shorelines just “shoreline change,” because it’s never going to stop. Proponents of fighting nature, meanwhile, call battling erosion the more healthy sounding “beach nourishment.” The problem with beach nourishment, though, is that it gets consumed—sometimes quickly.

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Hurricane Irma kills 10, may hit Florida Sunday as Category 4

Hurricane Irma hits D.R., heads to FloridaHurricane Irma plowed past the Dominican Republic toward Haiti on Thursday after devastating a string of Caribbean islands and killing at least 10 people as one of the most powerful Atlantic storms in a century took aim at Florida.

With winds of around 175 mph (290 kph), the storm lashed several small islands in the northeast Caribbean, including Barbuda, St. Martin and the British Virgin Islands, tearing down trees, flattening homes and causing widespread damage.

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Irma strengthens into Category 5 hurricane, nears Caribbean

Hurricane Irma heads northwestHurricane Irma grew into a dangerous Category 5 storm, the most powerful seen in the Atlantic in over a decade, and roared toward islands in the northeast Caribbean Tuesday on a path that could eventually take it to the United States.

The U.S. National Hurricane Center said Irma was a "potentially catastrophic" storm with maximum sustained winds of 180 mph (285 kph) as it bore down on the twin-island nation of Antigua and Barbuda. It was centered about 225 miles (365 kilometers) east of Antigua in the late morning and moving west at 14 mph (22 kph).

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Warnings Issued as Hurricane Irma Strengthens

Hurricane IrmaThe newest hurricane that could threaten North America intensified Monday morning, though its future path remains uncertain.

As of 8 a.m. ET, Hurricane Irma was about 610 miles (980 kilometers) east of the Leeward Islands, the National Hurricane Center said. It's packing maximum sustained winds of 120 mph (195 kph) as it headed west-northwest at 14 mph (22 kph).

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The Latest: California wildfire reaches giant sequoia grove

California wildfiresAuthorities say a fire burning near Yosemite National Park has entered a 2,700-year-old grove of giant sequoias.

California fire officials said Saturday the wildfire entered the Nelder Grove late Friday night.

Giant sequoias are among the largest and longest-lived organisms on Earth.

The Nelder grove holds 106 of them, including one of the world's largest, the 24-story-high Bull Buck sequoia.

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