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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 […]

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Trump's Game of Thrones Tweet Is Odd—but Probably Not Trademark Infringement

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Of all the apparatuses presidents have at their disposal for making pronouncements—press secretaries, official statements, televised addresses from the Oval Office—the one President Trump used to trumpet forthcoming sanctions on Iran is by far the strangest: a Game of Thrones meme. On Friday morning the president posted the image below on Twitter. It’s a picture […]

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Analysis: Data Shows Rising Seas Threaten Over 300,000 Homes

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This story originally appeared on The Guardian and is part of the Climate Desk collaboration. Sea level rise driven by climate change is set to pose an existential crisis to many US coastal communities, with new research finding that as many as 311,000 homes face being flooded every two weeks within the next 30 years. The swelling oceans are […]

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The Spooky Evolution of Text Message-Based Horror Stories

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Last spring, filmmaker Paul Hough got a eerie bit of intel from his 12-year-old daughter: Apparently, an empty school bus had been spotted in their Los Angeles neighborhood, cruising around without any passengers inside. For Hough, a horror writer and filmmaker, the chilling incident proved inspirational. He quickly got to work on a video, titled […]

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Pain Is Weird. Making Bionic Arms Feel Pain Is Even Weirder

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Pain is an indispensable tool for survival. The prick of a nail underfoot is a warning that protects you from a deep, dirty wound—and maybe tetanus. The sizzle of a steel skillet is a deterrent against a third-degree burn. As much as it sucks, pain, oddly enough, keeps us from hurting ourselves. It's a luxury […]

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The 14 Most Promising Midseason Shows Coming to TV

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The middle of the TV season—aka the start of the new year—usually signals the closest thing television has to a midlife crisis. Sometimes it tries to reconnect with college friends. Sometimes it just tries something new and edgy. It can be a time of rejuvenation, or a desperate grab at relevance. But in the Age […]

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The Physics Behind a Fake Flying Samurai Battle

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This video shows a battle between samurai with jet packs. Don't get excited—it's fake. How do I know? There are a few obvious signs of fake-itude, starting with the shaking camera. This battle was likely recorded on a hand held phone—and if you went to all the trouble of creating a rocket pack, couldn't you […]