Science, Spoken

If the idea of swarms of delivery drones dropping packages all over our cities started out as a joke, for some reason the punchline hasn’t landed yet. Amazon applied for a patent in 2015 for a command center, like a beehive, plopped into your city, which isn’t a worrying metaphor at all. Google has its own program in the works, which at least for the moment involves delivering burritos. Again, if this is a joke, it’s got a very long fuse. Learn about your ad choices: dovetail.prx.org/ad-choices

It will start with a flash of light brighter than any words of any human language can describe. When the bomb hits, its thermal radiation, released in just 300 hundred millionths of a second, will heat up the air over K street to about 18 million degrees Fahrenheit. It will be so bright that it will bleach out the photochemicals in the retina of the eyes of anyone looking at it, causing people as far away as Bethesda and Andrews Air Force Base to go instantly, if temporarily blind. Learn about your ad choices: dovetail.prx.org/ad-choices

Many people don't know too much about angular momentum—and that's fine. But what about figure skaters? Whether they understand the concept of angular momentum doesn't matter but they use it in one of the all time classic skating moves. You've seen it before. The skater starts off in a standing position and spins about the vertical axis. After a few rotations, the skater pulls both arm in closer to the body and spins faster. In physics, we call this conservation of angular momentum. Learn about your ad choices: dovetail.prx.org/ad-choices

What do you do when you discover you’re wrong? That’s a conundrum Daniel Bolnick recently faced. He’s an evolutionary biologist, and in 2009 he published a paper with a cool finding: Fish with different diets have quite different body types. Biologists had suspected this for years, but Bolnick offered strong confirmation by collecting tons of data and plotting it on a chart for all to see. Science for the win! The problem was, he’d made a huge blunder. Learn about your ad choices: dovetail.prx.org/ad-choices

Cape Town is withering. If current projections hold, the South African city of 4 million will run out of water on May 11, known as Day Zero. It’s been three long years of drought—we're talking a once every 1,000 years kind of problem that Cape Town's water infrastructure just wasn't built for. The irony is that a whole sea of water laps at the shores of the coastal city. But if you wanted to drink it, you’d have to build an expensive, energy-intensive desalination facility. Learn about your ad choices: dovetail.prx.org/ad-choices

At the 2014 Sochi Winter Olympics, the 4 x 10 kilometer relay was supposed to be a battle of cross-country ski titans Norway and Sweden. Felix Breitschädel watched from the sidelines as the race unfolded under a warm Russian sun. But when the first skiers emerged from the woods onto the arena packed with spectators, Norway's first skier was nowhere to be seen. He dropped to ninth place, while the rest of the team rallied to finish fourth. Learn about your ad choices: dovetail.prx.org/ad-choices

During the Cold War, on the vast, barren flatland around Area 51's dried-up Groom Lake, the military developed a stealth spy plane code-named Project Oxcart. Project personnel were sworn to secrecy, but still, US officials worried that the Soviets would find out what they were up to. With good reason: Up above, USSR satellites were ready to spy with their on-board cameras. Learn about your ad choices: dovetail.prx.org/ad-choices

So you've decided you need a break from your smartphone. You're not looking to do anything drastic, like revert to one of those old school Nokia bricks, because, let's face it, having a supercomputer in your pocket comes in handy. But you've grown wary of how you use the thing—the way it keeps you up at night, distracts you from your work, interrupts family time. The impulsive way you check it, it feels ... off. A bit like codependence. Learn about your ad choices: dovetail.prx.org/ad-choices

Florida’s space coast roared to life on Tuesday as SpaceX fired off its long-in-development Falcon Heavy rocket from Kennedy Space Center. Tens of thousands of spectators made the pilgrimage from across the country to experience the immense heat and thunderous roar of the rocket’s 5 million pounds of thrust. Upon liftoff, at precisely 3:45 PM Eastern, the Falcon Heavy rocket took its place as the most powerful launch vehicle in the world. About 3. Learn about your ad choices: dovetail.prx.org/ad-choices

Rich Lee had armor implanted in his shins in 2016. Soft until struck, the polymer­foam tubes could withstand the full force of a baseball bat swing. The procedure seemed promising—until his stitches burst, prompting him to rip out the tubes. It hurt like hell, but it won’t stop him from his next trial. Learn about your ad choices: dovetail.prx.org/ad-choices