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...relaxing system is activated by tranquilizers like Valium and the popular sleep drug Ambien, which attach to GABA receptors and act similarly to GABA. But at puberty, female mice experience a 700% increase in an unusual GABA receptor that helps calm the nervous system, except when under stress. In fact, this oddball receptor does the opposite: it responds to one of the body's stress-reducing hormones, THP, by revving up the nerves and raising anxiety. (See how to prevent illness...
...interview, McGivern said he thought an apparent drop-off in the ability to learn new things at puberty might merely reflect the fact that teenagers are becoming more attuned to social issues than dull learning tasks: "It may be a shift in what we pay attention to and are motivated to look at that's driving this." But that would not explain Smith's mice or similar biochemical changes she has observed in tissue samples related to learning. (There's no question of motivation in a petri dish...
...Last year, total fixed-asset investment accounted for more than 90% of China's overall growth; residential and commercial real estate investment comprised nearly a quarter of that. Toss in the not insignificant fact that it was a huge real estate bust in the U.S. that dumped the world into recession in the first place, and many analysts are now beginning to fear the worst. "China's property market," says independent Shanghai economist Andy Xie, "is a massive bubble." (See TIME's photo-essay "The Making of Modern China...
...tears when Dingell lost his House Energy and Commerce gavel to Henry Waxman last year - the committee is the only one Stupak has served on since his election to Congress in 1992. Health care reform has been Dingell's top priority during his 54 years in office and, in fact, the House bill was named for him. "Mr. Dingell had a piece of me yesterday for quite some time," Stupak told reporters Sunday to laughter. "John Dingell is one of my nearest, dearest, closest friends. I'm glad for John Dingell to have this...
...Parliament under the ruling National Democratic Party, said he knew of "more than 50" Sinai Bedouin who were serving in the police or army. But when asked to name one, he couldn't. And when asked to provide a Bedouin soldier's telephone number, he provided his own - a fact that proved embarrassing a moment later when the reporter called...