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Dino Doomsday Asteroid Baked Earth For 100,000 Years
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Some 66 million years ago, a city-sized asteroid set fire to the planet and began what was likely the worst day in history. Decades of research have helped illuminate the actual impact. But scientists are still figuring out what happened over the years that followed.
Based on studies of the impact site, it’s likely that sulfur vaporized from the crater would have choked our atmosphere and blocked the sun for years or decades. So Earth likely cooled into a kind of nuclear winter, with land blogs.discovermagazine.com/...
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Uncovering Roman History With Ice Cores and Lead
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Scientists today are searching for the "Golden Spike," evidence for the presence of man that will show up even hundreds of thousands of years from now. Such a marker would officially kick off the Anthropocene, the epoch of man, and candidates include the presence of radiation from nuclear bomb tests in geological samples and elevated levels of CO2 preserved in ice cores.
But even today, we can look back into the layers of Earth's past and see evidence of humanity. Researchers have peered blogs.discovermagazine.com/...
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Bitcoin Will Soon Use More Energy Than Austria
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By now, we’re all tired of hearing about the virtual currency turned investment craze known as Bitcoin. Created in response to the 2008 financial crisis, anarcho-capitalists hailed it as the decentralized future of commerce.
But as prices soared and the biggest names on Wall Street bought in, Bitcoin became mostly known as a speculative, unregulated investment. Think Beanie Babies, but you can also use them to buy drugs and engage in human trafficking.
Perhaps the most remarkable Bitco blogs.discovermagazine.com/...
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Information to Action: Strengthening EPA Citizen Science Partnerships for Environmental Protection
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The new report from the National Advisory Council for Environmental Policy and Technology (NACEPT) is out: "Information to Action: Strengthening EPA Citizen Science Partnerships for Environmental Protection." This report is a follow-up to the Council's first report, "Environmental Protection Belongs to the People."
There are ten recommendations to the EPA in the report(s). As articulated on the EPA's website: The Council’s April 2018 report, Information to Action—Strengthening EPA Citizen blogs.discovermagazine.com/...
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Team of Top Scientists Prepare to Invade Antarctica's Scariest Glacier
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An elite team gathered in the United Kingdom on Monday to plot their plan of attack in a daring effort to hold off a global catastrophe. No, it isn't the latest Avengers flick. This group, roughly 100 strong, consists of some of the world's top polar scientists. And their quarry is an absolutely massive chunk of ice. They're calling it the Thwaites Invasion.
Of all the glaciers in Antarctica threatened by climate change, scientists have recently grown especially concerned about one in par blogs.discovermagazine.com/...
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Earth’s Magnetic Field Probably Isn't Reversing
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The Earth’s magnetic field has been declining about 5 percent every 100 years since at least 1840, and possibly even earlier. The dip in strength has spurred worries of an imminent "flip," a reversal of magnetic polarity that could be catastrophic to our modern technological networks.
But a study released Monday in the Proceedings of the National Academy of Sciences brings some good news. A reversal is not likely in the near future, say European researchers, and the decrease in the field' blogs.discovermagazine.com/...
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Volunteers Protect Clean Water from Coast to Coast
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By: Mara Dias and Colleen Henn
The Surfrider Foundation is pleased to release its 2017 Clean Water Annual Report, which tracks the progress of our Blue Water Task Force (BWTF) and Ocean Friendly Gardens (OFG) programs during the calendar year of 2017.  At a time when it can be difficult to depend on the federal agencies tasked with protecting our clean water and healthy coasts, it is encouraging to see how much a dedicated network of volunteers can accomplish in just one year!
One of the S blogs.discovermagazine.com/...
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Competition Meets Collaboration: The City Nature Challenge
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When you hear the word “nature,” you’re likely to think of your last camping trip to a state park, or of grandiose landscapes with forests, lakes, and snow-capped mountains. You may remember the last trip to the beach and the variety of birds you saw while sunbathing. There are likely many images that pop into your head when you hear the word but the image of a city is likely not one of them. The City Nature Challenge hopes to change that.
What is the City Nature Challenge and how did it star blogs.discovermagazine.com/...
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No One Knows How Long the U.S. Coastline Is

How long is the U.S. coastline? It's a straightforward question, and one that's important for scientists and government agencies alike. The U.S. Geological Survey could give you an answer, too, but I'm going to tell you right now that it's wrong.
In fact, no one could give you the right answer, and if you look around, you'll find a number of estimations that differ by seemingly improbable amounts. One government report lists the number as 12,383 miles. The same report admits that a differ blogs.discovermagazine.com/...
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Climate Change Is Weakening a Crucial Ocean Current
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When you picture the rugged coastlines of Norway, tropical heat probably doesn't come to mind, but it should. Even in the country’s Arctic reaches, the coast is typically free from ice and snow, and the weather is often more Seattle than Anchorage.
How can that be? Residents can thank the Gulf Stream, an ocean conveyor belt that pushes warm water their way from the tropics.
And Northern Europeans aren’t the only ones who should be thankful, either. Much of Europe and the east coast of blogs.discovermagazine.com/...