A new report from the National Academy of Sciences says much of what's commonly called "forensic sciences" doesn't meet scientific standards. Experts say the country's forensics methods and systems — from fingerprint identification to bite-mark analysis — need an overhaul.
Gray hair is a common sign of aging, but just what causes locks to lose their color isn't well understood. Dr. Gerald Weissmann discusses new research suggesting that hydrogen peroxide build-up in hair follicles may bleach the color from the hair as it leaves the scalp.
Research reported this week in The New England Journal of Medicine finds that hundreds of study participants were able to drop similar amounts of weight by cutting calories, regardless of whether they followed diets heavy on fats, carbohydrates or proteins. Author Dr. Frank Sacks explains the findings.
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Galileo first peered through his astronomical telescope toward the heavens 400 years ago, spotting mountains on the moon and discovering the moons of Jupiter. Astrophysicist Mario Livio talks about the special events planned this year to commemorate Galileo's discoveries.
Utility company Southern California Edison and solar startup BrightSource Energy announced a deal to build a solar-thermal plant that would generate 1,300 megawatts of power, slightly more than a modern nuclear plant, in the Mojave Desert. BrightSource CEO John Woolard discusses the project.