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Dreams Help Soothe Your Bad Memories

Sleep helps us consolidate our memories. Sleep also helps us learn. During REM sleep, which is the dreaming stage of sleep, the brain stops releasing stress chemicals

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Last Chance for Kyoto Protocol: Nearly 200 Nations Begin Climate Talks

(Reuters) - Almost 200 nations began global climate talks on Monday with time running out to save the Kyoto Protocol aimed at cutting the greenhouse gas emissions scientists blame for rising sea levels, intense storms, drought and crop failures. [More]

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Atrazine in Water Tied to Hormonal Irregularities

Women who drink water contaminated with low levels of the weed-killer atrazine may be more likely to have irregular menstrual cycles and low estrogen levels, scientists concluded in a new study. [More]

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Scientists Make the ‘Perfect’ Foam

Physicists working at Trinity College in Dublin, Ireland, have finally made the perfect foam. Whereas most Dubliners might consider that to be the head on a pint of Guinness, Denis Weaire and his co-workers have a more sophisticated answer. [More]

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Cross-species transplantation brings new hope to diabetics

South Korean scientists say there is new hope for diabetics with experiments in animals demonstrating that insulin producing cells can be successfully transplanted from one species to another. The researchers attribute the success of the experime..

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Scan’t Evidence: Do MRIs Relieve Symptoms of Depression?

When a researcher asks a volunteer to slide head-first into the open eye of a magnetic resonance imaging (MRI) machine, the expectation is that the device's magnetic field will penetrate the skull to produce a faithful picture of the brain without changing its behavior.

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Scan’t Evidence: Do MRIs Relieve Symptoms of Depression?

When a researcher asks a volunteer to slide head-first into the open eye of a magnetic resonance imaging (MRI) machine, the expectation is that the device's magnetic field will penetrate the skull to produce a faithful picture of the brain without changing its behavior. A new study suggests, however, that MRI machines do, in fact, manipulate brain activity--and they change the brain in a way that helps treat depression. In other words, MRIs may be unintentional antidepressants

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