Pepsi Ditching Aspartame Is Not a Good Thing

You might not know it from certain conspiracy-minded corners of the Internet or 1990s-era chain emails, but aspartame is one of the most well-studied food additives ever. And yes, it is safe. Pepsi’s decision today to replace aspartame with, oh, another chemical sweetener may be a canny PR move—but it’s really a win… » 4/24/15 4:00pm Friday 4:00pm

Apple Watch Won’t Deliver on Its Promise to Revolutionize Health. Yet.

The Apple Watch officially arrives today, packed with sensors and software to quantify your every footstep. But measured against Apple’s big ambitions for the future of medicine, the Watch is still a rudimentary device. And for Apple to revolutionize health, it needs far more than a bauble-sized computer. » 4/24/15 2:18pm Friday 2:18pm

The U.S. Has a Secret Model of Iran's Nuclear Facilities 

Back in the days of the Manhattan Project, the government set up a string of National Labs devoted to creating nuclear weapons. Now, those labs are playing a role in the opposite task: stopping them. A secret facility in Tennessee that replicates Iran’s nuclear capabilities was key to the recent negotiations. » 4/22/15 4:55pm Wednesday 4:55pm

China Is Turning a Remote Reef Into an Artificial Island With a Runway

A remote archipelago in the South China Sea has come under an extraordinary amount of scrutiny lately. Here, China is building up small reefs and atolls into whole artificial islands—all in hotly disputed territory. In the clearest sign yet of its military intentions, one of those islands now has an airstrip. » 4/21/15 2:30pm Tuesday 2:30pm

Cool Teens Prefer "Unicorn Puke" Flavored E-Cigs

With the e-cigarettes industry’s recent boom, it’s no surprise that vaping is also exploding in popularity among teens. Newly released CDC data show that teen use of e-cigarettes tripled to 13.4 percent from 2013 to 2014, overtaking traditional cigarettes. Is this a good thing? A bad thing? Let us DISCUSS. » 4/16/15 2:50pm 4/16/15 2:50pm

NASA Is Studying How to Replace Mirrors in Its Telescopes With Glitter

Space telescope Hubble and its successor, the James Webb Space Telescope are made with huge, expensive mirrors. And that can be a problem when you’re paying to launch the thing into space. So instead of one big mirror, how about thousands, or even millions, of tiny ones? In other words, how about glitter? » 4/15/15 7:40pm 4/15/15 7:40pm

A Strange Whale Sound Recorded in Antarctica Could Be From a New Species

Whales are elusive creatures who roam the vast, open ocean. Because sightings of many species are so rare, we have to track these giant mammals by eavesdropping on their songs. And marine scientists recently picked a baffling new signal, which could be from a new species of beaked whale. » 4/15/15 6:40pm 4/15/15 6:40pm

Italian Man's Quest to Fix Toilet Led to Amazing Archaeology Discoveries

Fifteen years ago, Luciano Faggiano of Lecce, Italy sent his sons out digging for a broken sewer line. They didn’t find the pipe, but they did find “a Messapian tomb, a Roman granary, a Franciscan chapel and even etchings from the Knights Templar,” writes Jim Yardley in a story for the New York Times. » 4/15/15 3:00pm 4/15/15 3:00pm