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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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Price on Carbon Failing to Reduce Greenhouse-Gas Emissions

Alberta’s $57 million carbon-cutting program is failing, according to the latest report from the Canadian province’s auditor-general, Merwan Saher. Like many such programs around the world, it includes an emissions trading scheme , which allows polluters to meet their emissions reductions targets by buying carbon offsets from a selection of approved projects.

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Price on Carbon Failing to Reduce Greenhouse-Gas Emissions

Alberta’s $57 million carbon-cutting program is failing, according to the latest report from the Canadian province’s auditor-general, Merwan Saher. Like many such programs around the world, it includes an emissions trading scheme , which allows polluters to meet their emissions reductions targets by buying carbon offsets from a selection of approved projects.

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Food We Eat Might Control Our Genes

“You are what you eat.” The old adage has for decades weighed on the minds of consumers who fret over responsible food choices. Yet what if it was literally true?

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Audio Slide Show: Pilots Scale Alaska Glacier to Find Wreckage of Northwest Airlines Flight 4422

Half a century after Northwest Airlines Flight 4422 slammed into the side of 4,950-meter Mount Sanford in eastern Alaska's Wrangell Mountains, killing all 30 men on board, commercial pilots Kevin McGregor and Marc Millican found the wreckage embedded in a glacier. After searching fruitlessly for the debris from the air, McGregor and Millican undertook several arduous treks on foot on the glacier

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