Russian researchers in Antarctica are on the verge of piercing a hole through two miles of ice into an ancient lake, untouched by the light of day for some 20 million years. But it'll be a delicate process to break through without disturbing the pristine waters. Guest host David Green speaks with Antarctic researcher John Priscu about the process.

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A new map from the USDA has some northern gardeners hoping to grow plants that used to be considered too fragile for cold weather zones. The hardiness zone chart is about a half zone warmer than the last one issued in 1990. The USDA says the changes are not due to global warming, but to more sophisticated mapping methods. Seed sellers and buyers say that, whatever the reason, the warmer temperatures expand possibilities for planting this spring.

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For snow fans in the contiguous US, this winter has left much to be desired. The warm and mild season in the lower 48 and the wild snow dumps and cold weather up north in Alaska can be blamed largely on a weather pattern called "arctic oscillation." Audie Cornish gets an explanation of the weather phenomenon from meteorologist Jeffrey Masters.

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Unmanned Aerial Vehicles (UAVs) are replacing boots on the ground in some wars. Commercially, UAVs are being used for things like crop-dusting and flood mapping. Experts discuss advances in drone technology and how to address legal and privacy concerns that stem from their use.

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A study of cocaine addicts finds that they have abnormalities in areas of the brain involved in self-control. And these abnormalities appear to predate any drug abuse.

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The relatively clean gas is replacing dirty coal-fired power plants. That's good news for the environment. But in the long run, cheap natural gas might delay the transition to even cleaner sources of energy, such as wind and solar power.

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The once-booming clean-tech industry is facing hard times, in part because of cheaper natural gas, the effects of the financial crisis, China's growing solar industry and the Solyndra bankruptcy. Reporter Juliet Eilperin, who covers the industry's struggles in Wired's February issue, explains.

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Researchers counted more than 5,000 ticks to calculate the risk of Lyme disease in the Eastern U.S. Turns out the risk is high in the Northeast and nearly zero in the South.

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A new study wants to rectify beef's image as an environmental miscreant. It says modern beef production is a lot kinder to the environment than it was 30 years ago.

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From oppressive regimes to editors of magazines, manipulating photos is nothing new. And technology is making these edits easier and easier: A group of grad students built a computer program that stands to make such forgeries a cinch.

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Last year it looked like stricter controls would be put in place to limit workers' exposure to dangerous silica dust. But for almost a year, the proposed regulations have been stalled at the White House Office of Management and Budget. Worker safety advocates are growing frustrated, but industry stakeholders say current regulations are sufficient.

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Last year it looked like stricter controls would be put in place to limit workers' exposure to dangerous silica dust. But for almost a year, the proposed regulations have been stalled at the White House Office of Management and Budget. Worker safety advocates are growing frustrated, but industry stakeholders say current regulations are sufficient.

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The Florida Everglades is infested with Burmese pythons. To keep them from spreading, the U.S. Fish and Wildlife Service is making it illegal to import the pythons into the country, or transport them across state lines. Scientists have discovered the pythons are doing more damage than ever imagined.

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The anesthetic and club drug ketamine seems to lift depression symptoms in a matter of hours. But how does it work? Researchers are searching for the answer in an attempt to make a new class of depression medications. "We can take care of a migraine in hours," one researcher asks. "So why do we have to wait weeks or months with depression?"

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At current rates of overfishing, jack mackerel stocks in the southern Pacific could collapse soon, the International Consortium of Investigative Journalists reports.

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Burmese pythons have been slithering around south Florida for decades, but scientists now say the invasive constrictors are so bad, they're eating their way through the swamps. The snakes have decimated populations of mammals like raccoons, possums and white-tailed deer.

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Currently, there's no quick fix for severe depression. Antidepressants usually take weeks to work, if they work at all. But patients who received experimental doses of ketamine — long used as an anesthetic, and an illegal club drug — report an astounding relief from their symptoms in less than a day.

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Currently, there's no quick fix for severe depression. Antidepressants usually take weeks to work, if they work at all. But patients who received experimental doses of ketamine — long used as an anesthetic, and an illegal club drug — report an astounding relief from their symptoms in less than a day.

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Everything from the size of your plate to the color of your food may be telling you to eat more than you actually need. The good news is you can use psychology to your advantage, if you learn a few tricks of the trade.

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Scratching an itchy ankle is more satisfying than relieving an itch on your back or arm. Even if you thought you knew that, scientists now have evidence to back up your hunch.

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