Science, Spoken

Experienced mathematicians warn up-and-comers to stay away from the Collatz conjecture. It’s a siren song, they say: Fall under its trance and you may never do meaningful work again. The Collatz conjecture is quite possibly the simplest unsolved problem in mathematics—which is exactly what makes it so treacherously alluring. Learn more about your ad choices. Visit podcastchoices.com/adchoices

In the summer of 2014, Markie Miller discovered she'd been drinking toxic coffee. Miller lives in Toledo, Ohio, where fertilizer runoff from farms had caused blooms of toxic cyanobacteria in Lake Erie, her water supply. The city issued an alert at 2 am, but by the time Miller saw it she'd already been sipping her morning java. “I'm like, shit, what did I just expose myself to?” she says. Learn mor...

You may have heard the phrase “There ain’t no such thing as a free lunch,” perhaps in conversation with your parents when they wanted you to get a job. Its acronym—TANSTAAFL—pops up in subreddits like r/Anarcho_Capitalism, on sweatshirts from the politically inclined website LibertyManiacs.com, and as a nerdy economics rap on YouTube. Also: For the first eight years of the Libertarian party’s exis...

For the last 20 years, the future of nuclear power has stood in a high bay laboratory tucked away on the Oregon State University campus in the western part of the state. Operated by NuScale Power, an Oregon-based energy startup, this prototype reactor represents a new chapter in the conflict-ridden, politically bedeviled saga of nuclear power plants. NuScale’s reactor won’t need massive cooling to...

In 2004, a 64-year-old woman in Indiana had a catheter put in to help with dialysis. Soon after the procedure, she came to a local hospital with low blood pressure and what turned out to be a dangerous antibiotic-resistant infection from a bacteria called Enterococcus faecalis. Today, that woman’s blood samples helped solve a long-standing mystery: how this deadly bacteria neutralizes the most pow...

In late October, the snow elves—that is to say, employees—of the Zermatt Bergbahnen AG ski area in Switzerland fire up their secret weapon: a 30-ton snow-generating goliath known as Snowmaker. For 20 days straight it runs around the clock, churning out 1,900 tons of snow per day. That snow is then ferried up the mountain on vehicles with caterpillar tracks called “snow cats.” Wired UK This story o...

It’s the nightmare of travelers sitting near the emergency exit and the inevitable fate of bad guys tussling on a plane with James Bond—the door erupting open mid-flight, sucking them into the cold blue and white. This scenario was no doubt running through the minds of the passengers of a BA flight to Riyadh this week, when a man, reportedly in the grip of a panic attack, tried to pull open the ai...

As climate delegates discuss the planet’s future at the COP25 meeting in Madrid this week, a new study finds the Arctic is warming much faster than the rest of the planet. That’s forcing polar bears and walruses to crowd onto shrinking beaches, starving reindeer and caribou, and driving extreme heat, drought, and sea level rise along the US coast. Those are some of the results of a new study publi...

Earlier this year, a small group of spectators gathered in David Taylor Model Basin, the Navy’s cavernous indoor wave pool in Maryland, to watch something they couldn’t see. At each end of the facility there was a 13-foot pole with a small cube perched on top. A powerful infrared laser beam shot out of one of the cubes, striking an array of photovoltaic cells inside the opposite cube. To the naked...

On Wednesday, a SpaceX Falcon 9 rocket is expected to lift off from Cape Canaveral in Florida bound for the International Space Station. The brand new rocket will be carrying a previously flown Dragon capsule loaded with supplies and experiments. It will mark SpaceX’s nineteenth trip to the space station as part of NASA’s Commercial Resupply Services program. After the rocket booster sends its pay...

Some so-called smart garments—clothing and accessories outfitted with sensors, Bluetooth, and other gadgetry—flirt with the absurd. Does anyone need a $1,000 touch-interface backpack that alerts you if you accidentally leave your phone somewhere? Or a (now discontinued) sweatshirt that tracks your movements and awards redeemable ‘points’ you can spend on gift cards and “VIP experiences”? Not reall...

Maiken Nedergaard considers herself a pragmatic woman. She’s got kids, a career, and she knows she feels better after a solid night of shut-eye. She’s also a neuroscientist at the forefront of research showing the biological value of sleep. In studies she coauthored in 2013 and 2019, she documented how during sleep, fluid washes over our brains, clearing out toxins like beta amyloid, which is link...

This story originally appeared on Bulletin of the Atomic Scientists and is part of the Climate Desk collaboration. When I pull into a parking lot in my Toyota 4Runner, I hope I won’t see any of my friends who are environmental activists. I hope I’ll fit into the eco-conscious (read small) parking spaces at some of the places I shop. I feel like a skinny-car person in a fat-truck body. Learn more a...

When we’re talking about social justice, a tipping point is a beautiful thing—a court case that shifts public opinion, for example. For a species, a tipping point can spell doom, as an environmental catastrophe pushes a population to the brink. When it comes to climate change, there isn’t just one tipping point but many that scientists are increasingly pulling into view. Learn more about your ad c...

The climate crisis is so epic, so vicious, so wide-reaching, that at this point there are few aspects of the human experience it isn’t transforming. Supercharged wildfires are devastating California, heatwaves are killing more people and more crops, cities are struggling to adapt to strange new climates. The global transformation currently underway is also increasingly exposing a fundamental yet o...

It’s become a veritable rite of passage for humans settling into their first apartments: Assemble a piece of Ikea furniture from a cryptic set of pictures without having either you, or the item in question, fall apart. What better way, thought researchers at the University of Southern California, to torture teach robots to manipulate the world around them. Learn more about your ad choices. Visit p...

The Cassini spacecraft perished in a literal blaze of glory on September 15, 2017, when it ended its 13-year study of Saturn by intentionally plunging into the gas giant’s swirling atmosphere. The crash came after a last few months of furious study, during which Cassini performed the Grand Finale — a sensational, death-defying dance that saw the spacecraft dive between the planet and its rings 22...

A few years ago, a group of physicists created an unusual, never-before-seen subatomic particle. Using a particle accelerator at Riken, a Japanese research institute, they slammed streams of calcium nuclei against a metal disk, over and over, for hours at a time. Then, sifting through the aftermath of the collisions, they found their coveted particle. They named their creation: sodium. That’s righ...

Anyone who says there’s nothing new under the sun hasn’t made a recent trip to Lancaster, California. There, on the outskirts of the Mojave desert, 400 giant mirrors, each the size of a large flatscreen TV, twitch in the sunlight. Their reflective faces are turned toward a nearby tower that looms over the lot like an industrial eye of Sauron. Learn more about your ad choices. Visit podcastchoices....

Imagine maneuvering your car through a dark tunnel that bulges unexpectedly in places and then turns sharply through a maze-like passage. The perilous journey feels safer with a light and camera showing the way ahead. It’s even better if digital lines lay out a track, assuring you stay in your lane. In a rudimentary way, that scenario illustrates the advantage mixed reality (or augmented reality)...

In the search for life in our solar system, Mars tends to steal the spotlight (thanks, David Bowie). But in recent years Jupiter’s fourth largest moon, Europa, has emerged as a promising extraterrestrial nursery. Planetary scientists have long suspected Europa may harbor a vast liquid water ocean beneath its thick, icy crust. Learn more about your ad choices. Visit podcastchoices.com/adchoices

The economics of knockoffs is simple: The rich buy Prada bags, while the not so rich opt for fakes, which telegraph to the world they’re just as shallow as the rich, but on a budget. Prada doesn’t like knockoffs because they undercut both the bottom line as well as the purity of its brand. Some scientists have been trying to put this principle to work in the rhino horn trade, by producing a convin...

In an age when so much of the internet feels bad, Pinterest has carved out a niche as the place you come to feel good. So when the company noticed Pinterest users searching for content related to “self-harm”—not a ton, but enough to catch someone’s attention—it decided first to filter out what would show up on the site. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Learn more about your ad choices. Visit podcastchoices.com/adchoices

Learn more about your ad choices. Visit podcastchoices.com/adchoices