Science Now Discoveries from the world of science and medicine
Hey, sister -- your birth order may affect your weight

Bad news, big sisters: A new study finds that firstborn girls are more likely to be overweight or obese than their second-born sisters.

The findings are based on data collected from more than 13,400 pairs of sisters born in Sweden.

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When you mix classic movie lines with nerd humor, you get #scienceamoviequote
Goth teens are more prone to be depressed or hurt themselves, study shows

This just in: 15-year-olds who dress exclusively in black, pierce themselves extensively and favor adornments that are ripped, spiky, raunchy or just-plain disturbing may be communicating that they are in psychological pain.

Adults can be a little slow on the uptake when it comes to reading an adolescent's state of mind.

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Researchers determine what really killed Knut the polar bear

More than four years after Knut the celebrity polar bear's death, scientists have finally uncovered the cause of his premature demise. 

In a study published Thursday in the journal Scientific Reports, researchers say that Knut died from inflammation of the brain caused by an autoimmune disease known as anti-NMDA receptor encephalitis.

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CDC gives schools good grades for nutrition, but asks: Where are the salad bars?

Federal health authorities give American schools good grades for improving the nutritional quality of food served in their cafeterias — but there's still room for improvement, they said.

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Neurotic? Here's the silver lining

Consider, if you will, your favorite neurotic. You may need to look no further than across your breakfast table, or conjure a picture of the nation’s neurotic laureate — Woody Allen. Or perhaps you'd reach back in history, say, to Isaac Newton -- father of calculus, discoverer of the universal laws of motion, and a world-class neurotic.

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