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Hidden 'Ocean' Discovered Deep Underground Near Earth's Core

We may have another "ocean" to add to the world map -- only this one is hidden hundreds of miles beneath our planet's surface.<p>A new study suggests that a hidden "ocean" is nestled in the Earth's mantle some 400 miles beneath North America. The hidden reservoir, apparently locked in a blue …

Nanoparticles: The Next Big Thing in Medicine — NOVA Next | PBS

DNA. The very acronym calls to mind the molecule’s exquisite structure, a linear double helix. Our understanding of DNA and its orbiting strands has …

How Does Exercise Make You Smarter?

<i>A:</i><p>We posed your question to Dr. John Ratey, an associate clinical professor of psychiatry at Harvard Medical School, author of <i>Spark: The Revolutionary New Science of Exercise and the Brain</i><i>,</i> and a Reebok ambassador for active children.<p>Exercise, he says, has three effects on the brain that make …

Scientists Baffled by Mysterious Force Tossing Stars Out of Our Galaxy

Something is hitting stars in our Milky Way galaxy with such force that they are reaching the million-plus mile-per-hour velocity needed to break …

Physics

What Happens To Your Body When You Get Drunk And Stoned At The Same Time?

The science of the spins<p>The intoxicating effects of alcohol and of marijuana have been widely studied, but their combined effect—getting "cross-faded"—is woefully underexplored scientific territory. Here's a look at what we know about how pot and booze together affect the brain.<p>First, the basics: …