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One teaspoon of pure caffeine powder delivers about the same jolt as 25 cups of coffee. The Center for Science in the Public Interest hide caption

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The Center for Science in the Public Interest

Potent Powdered Caffeine Raises Safety Worries

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Scientists Bring The Sun Down To Earth To Learn How It Works

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Same-Sex Couples May Have More Egalitarian Relationships

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Doctors Not Cutting Back On Radiation For Breast Cancer Patients

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Sleepy in the day and wide awake at night? Give the screen a rest. Guido Mieth/Getty Images/Flickr RM hide caption

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Guido Mieth/Getty Images/Flickr RM

One More Reason To Reach For A Paper Book Before Bed

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Solving The Mystery Of Why Rock Ants Avoid Right Turns

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Schmidt Ocean Institute/HADES/YouTube

Unexpected Life Found In The Ocean's Deepest Trench

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Research Suggests Generosity Is Hardwired Into Our Brains

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Larkin Carey, an optical engineer with Ball Aerospace, examines two test mirror segments designed for the James Webb Space Telescope. The mirror for the scope is extremely powerful, but heavy and pricey. NASA hide caption

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NASA

Could Glitter Help Solve NASA's Giant Telescope Problem?

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What Motivates People To Give?

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Researchers at the University of Oxford have been looking for a link between sound and taste. iStockphoto.com hide caption

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iStockphoto.com

Want To Enhance The Flavor Of Your Food? Put On The Right Music

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Lactobacillus acidophilus, which is one variety of the genus Lactobacillus is one of the common active cultures found in yogurt and in the human gut. Scimat Scimat/Getty Images/Photo Researchers hide caption

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Scimat Scimat/Getty Images/Photo Researchers

These amphipods were discovered by scientists from the University of Aberdeen in waters more than 4 miles deep, north of New Zealand. Similar shrimplike crawlers may lurk at the bottom of the Challenger Deep. Oceanlab/University of Aberdeen/AP hide caption

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Oceanlab/University of Aberdeen/AP

7 Miles Beneath The Sea's Surface: Who Goes There?

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