Why the obese keep eating

Could obesity be treated as a form of drug addiction? A new study suggests that some overweight people may be addicted to eating in the same way that, say, a cocaine addict craves another hit of his favorite drug. Researchers at Yale University gave a small group of young women questionnaires to determine their levels of food addiction. Then they […]

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Africa’s disappearing lions

Africa’s lions are dwindling toward extinction at an alarming rate, Duke University researchers say. Using new high-resolution satellite data from Google Earth, they’ve discovered that the savanna habitat that lions need to survive has shrunk by 75 percent over the past 50 years and is far more fragmented than conservationists previously realized. Over the same period, the lion population is […]

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How Supervolcanoes Erupt

  Luckily for most of the U.S., the likelihood this eruption would happen is pretty low: about one in 100,000 any given year. If it did happen, it would be pretty devastating, though. “Thinking about a Yellowstone super eruption is like imagining a large asteroid hitting the Earth,” says Jacob Lowenstern, a research geologist with the USGS and Scientist-in-Charge of […]

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