Growing Up: Free-Range Kids or Smother Mother?

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How's a parent to know when a child is old enough to cross the street — or, in Laura Dekker's case, the ocean — alone?

Study: Why Words With Many Meanings Make Language More Efficient

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Why do so many words have so many meanings? And why doesn't that just confuse us more in conversation?

The Healthland Podcast: Brown Fat, Crawling-Skin Disease, Messy Desks and Kids’ Vaccines

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This week on the podcast: how your brown fat can burn white fat, whether Morgellons disease is real, what your messy desk says about you (it’s not what you think), and how chemicals in household items may weaken children’s response to vaccines. Click the play button below to listen, or go to iTunes to listen and subscribe for free.

Charges Filed Against Former Head of French Breast Implant Maker

French authorities have filed preliminary charges against the former head of a now-defunct company accused of supplying potentially faulty breast implants affecting thousands of women.

The Great Introverts and Extroverts of Our Time

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Herewith, TIME's unscientific survey of loud (and quiet) giants — it takes both kinds to make history. Read the related TIME cover story, "The Upside of Being an Introvert," available to subscribers here.

LEGO’s New ‘Friends’ Line for Girls: Offensive?

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Lego’s new building set for girls is sparking outrage among gender-equality advocates.

Demi’s Drug: What Is Nitrous Oxide?

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A former nitrous addict and expert on addiction explains why laughing gas is no joke

Morgellons Mystery: No Medical Explanation for ‘Crawling Skin’ Disease

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The symptoms of the bizarre illness known as Morgellons are enough to make your skin crawl. For patients who say they are suffering from the condition, that sensation is all too real.

Pink Light Burlesque: Breast Cancer Survivors Strip Down and Celebrate

Jennifer Burke used to prize her breasts as her best feature. But it wasn’t until she had a double mastectomy that she found herself performing a burlesque striptease in front of an enthusiastic New York City crowd.

Why We Nag. And Why We Shouldn’t

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Nagging can wreck a relationship. So why is it so hard to just stop?