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The Future of Former EPA Chief Scott Pruitt's Anti-Science Legacy

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Gone is the boss who loved first-class travel to places like Morocco and Rome, forced his staffers to find him an apartment (and a used Trump hotel mattress), and asked fast-food executives to hire his wife. But EPA administrator Scott Pruitt's many scandals haven't been the real bugaboo for environmental advocates—rather, it's been his rollback […]

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Fortnite Season 6 Lands, and the Rest of the Week in Games

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This week's Replay is all about the power of gaming communities—the power they have to make ongoing games really entertaining, the power they have to put pressure on corporations, and the power they have to, well, be really quirky and odd. Let's go! Fortnite's New Season Lands with Spooky Aplomb First up, the biggest news […]

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Welcome to the Age of the Hour-Long YouTube Video

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One month ago, a dog I have never met died. His owners are YouTubers Simon and Martina, a Canadian couple who make videos about the delicious food they eat in Tokyo, where they live. After their extremely old, extremely beloved dog, Spudgy, peacefully passed away, they took to YouTube to drink and cry and tell […]

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Cheap, Portable Sensors Are Democratizing Air-Quality Data

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This story originally appeared on CityLab and is part of the Climate Desk collaboration. Until she moved to Fresno, California in 2003, Janet DietzKamei had never experienced asthma. But after just a few years in a city notorious for its filthy air—the American Lung Association lists it in the five worst US cities for air quality—DietzKamei found herself in […]

The Life-Changing Magic of Peak Self-Optimization

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The first meme of 2018 was Mariah Carey publicly complaining that, prior to her New Year’s Eve performance, no one had brought her “hot tea.” It was funny and in keeping with Carey’s legendary diva antics, but it was also a GIF-able summation of the year’s desperate need for soothing. President Trump had closed out […]

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Snakelike Skin Gives a Robot the Power to Crawl

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Snakes, serpents, danger noodles. Whatever you call them, you’ve gotta respect them. I mean, have you tried getting around without any arms or legs? (Also, they can bite you.) The snake’s ambulatory secret is its special belly scales, which grip a surface like cleat spikes to help the reptile push forward. And now that secret […]

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These Physicists Watched a Clock Tick for 14 Years Straight

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Bijunath Patla’s experiment sounds like a real bore: Gather 12 of the most accurate clocks around the world, and watch them tick. It’s like a physicist’s version of watching paint dry. Patla’s team, based at the National Institute of Standards and Technology in Boulder, Colorado, began monitoring the clocks on November 11, 1999. And they’ve […]

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Dive into the Mind-Boggling Math of Tessellating Pentagons

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Children’s blocks lie scattered on the floor. You start playing with them—squares, rectangles, triangles and hexagons—moving them around, flipping them over, seeing how they fit together. You feel a primal satisfaction from arranging these shapes into a perfect pattern, an experience you’ve probably enjoyed many times. But of all the blocks designed to lie flat […]

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Watch the New SpaceX Reusable Rocket Make Its Debut

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Update: SpaceX scrubbed Thursday's launch after an abort during the countdown sequence. The next window opened Friday at 4:14pm Eastern. The Falcon 9 successfully launched and its first stage landed on the drone ship off the coast of Florida, which marks the company's 25th landing. SpaceX is set to launch the Block 5 version of […]

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The Physics of NASA's New Mars Helicopter

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Sending a rover to Mars is cool—but sending one to Mars along with a helicopter is even better. Yes, that is the plan for the next NASA Mars rover, scheduled for 2020. The idea is to have a driving rover that brings along a small coaxial helicopter. The helicopter will be self-powered and fly for […]