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Exercise and your brain: Why working out may help memory

Exercise and your brain: Why working out may help memory

A new study shows that sugar may not be so sweet for the brain – and may lead to memory problems. Researchers from four universities report in the Annals of Neurology that people who absorb glucose more slowly than those who metabolize it quickly are more forgetful and are more likely to have a faulty dentate gyrus, a pocket in the hippocampus section of the brain.

December 30, 2008 — Jordan Lite
At AGAP camp at last

At AGAP camp at last

Editor's note: Marine geophysicist Robin Bell is leading an expedition to Antarctica to explore a mysterious mountain range beneath the ice sheet. Following is the fifteenth of her updates on the effort as part of ScientificAmerican.com's in-depth report on the "Future of the Poles." AGAP SOUTH CAMP, ANTARCTICA —Yesterday morning the sky at the South Pole had the kind of ‘iffy’ look that made my stomach turn.  Instead of the normal brilliant blue, there were clouds on the horizon and sparkling ice crystals blowing past in the air.

December 30, 2008 — Robin Bell
Food additive may up lung cancer risk, study says

Food additive may up lung cancer risk, study says

Foods containing a widely used additive may increase the growth of lung cancers or cause new tumors to develop, new research suggests.

Tumors were more plentiful in mice with lung cancer fed a diet containing 0.5 to 1 percent inorganic phosphates (equivalent to the 40 mg.

December 30, 2008 — Jordan Lite
Parental rejection of gay teens worsens health

Parental rejection of gay teens worsens health

Parents' intolerance of their gay and lesbian teens increases the chance that they will suffer health problems in young adulthood, including increased risk of suicide, depression, drug abuse and unsafe sex, new research shows.

December 29, 2008 — Jordan Lite
Did the CIA trade Viagra for intel?

Did the CIA trade Viagra for intel?

CIA operatives in Afghanistan may be buying favors from local leaders using the erection-boosting drug Viagra, the  Washington Post reports. A tribal patriarch described in the Post story was happy to provide info about Taliban trade routes to intel officers in exchange for the little blue pills.

December 29, 2008 — Coco Ballantyne
Latisse: New eyelash-lengthening drug approved

Latisse: New eyelash-lengthening drug approved

Could a new eyelash-lengthening drug curb the envy of stubby-lashed ladies? The Food and Drug Administration (FDA) has green-lighted Latisse, which lengthens, thickens and darkens eyelashes when dabbed daily on the lash line on the lids with a disposable wand.

December 29, 2008 — Jordan Lite
Leap second: More time added to 2008

Leap second: More time added to 2008

Eager for this year to end? Bad news: you'll have to wait an extra second for 2009. On December 31, the planet's official timekeepers will add a “leap second” to the coordinated universal time scale (UTC) followed around the world.

December 29, 2008 — Jordan Lite

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