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Reports about the melting ice caps are distressing, but for the most part climate change remains abstract. The poor polar bear has been trotted out as the tangible face of global warming so often that we're beginning to see "polar bear fatigue." How about bringing the effects of Arctic...

Author: /time Magazine | Title: Putting a Price Tag on the Melting Ice Caps | 4/3/2010 | See Source »

That is, the down-regulation of D2 receptors seems to turn normal desire into compulsion. In Kenny's study, the rats that had been given extended access to junk food for 40 days were later willing to continue seeking fatty foods at the risk of getting a painful electric shock...

Author: /time Magazine | Title: Can Eating Junk Food Really Be an Addiction? | 4/3/2010 | See Source »

In one classic rat study by Bruce Alexander, emeritus professor of psychology at Simon Fraser University, researchers measured the impact of the social and physical environment on the risk of morphine addiction. They found that rats kept in small, isolated cages readily chose to self-administer high, frequent doses of...

Author: /time Magazine | Title: Can Eating Junk Food Really Be an Addiction? | 4/3/2010 | See Source »

But while Hu can't expect to win much in the way of U.S. concessions on Taiwan and Tibet, his trip to the U.S. could prove valuable on other fronts. China has traditionally stood on the sidelines of major international gatherings of political leaders, in keeping with the dictum of...

Author: /time Magazine | Title: Hu Heads for Washington: Will Tensions Ease? | 4/2/2010 | See Source »

In Washington, Obama will also be looking for China's help to curtail Iran's nuclear program. So far, Beijing has been reluctant to support tough sanctions and has repeatedly urged more patience to allow for diplomatic overtures. Saeed Jalili, Iran's top nuclear negotiator, spent Thursday in Beijing meeting...

Author: /time Magazine | Title: Hu Heads for Washington: Will Tensions Ease? | 4/2/2010 | See Source »

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