ben greene

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When Big Carnivores Go Down, Even Vegetarians Take The Hit

<b>Listen · 3:13</b><p><b>Toggle more options</b><p><b>Download</b>• <b><br>Transcript</b><p>Big, fierce animals — lions and tigers and bears, for example — are relatively scarce in nature. That's normal, because if you have too many, they'll eat themselves out of prey.<p>But top predators are now so rare that many are in danger of …

New HIV ‘weapon’ kills infected cells other therapies miss

Researchers have designed a potential new weapon against HIV—a combination therapy that targets infected cells standard therapies can’t kill.<p>A recent …

Giant underwater waves show their power

A study reveals the origins of hidden underwater waves that can tower hundreds of feet.<p><i>Internal waves</i> are what scientists call underwater waves that …

A Green-Movement Website Shakes Up The Debate Over GMOs

A 26-part series on genetically modified food was not Nathanael Johnson's idea. And he didn't realize it would take six months, either.<p>Last year, Johnson was hired as the new food writer for Grist, a website for environmental news and opinion. Grist's editor, Scott Rosenberg, was waiting with an …

Eternal sunshine and confused minds in Antarctica

We've been at sea for a month and, in that whole time, the sky has never been dark. The sun dips below the horizon for a few minutes every day in the early hours of the morning and, when the weather is clear, a luminescence of oranges, purples, blues and reds streak the sky. Ice floes change from …

February 1923 | Vintage Covers, 1920s

Virgin Galactic spaceship reaches new heights in supersonic flight

MOJAVE, Calif. -- Virgin Galactic, British billionaire Richard Branson's commercial space venture, reached its highest altitude yet Friday in a supersonic rocket plane that's set to carry paying customers into sub-orbit later this year.<p>The company's SpaceShipTwo blasted through the sound barrier …