Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk.
Jon Hamilton 2010
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Jon Hamilton

A man stands inside a backscatter scanner at Ronald Reagan Washington National Airport. Backscatter technology uses low-level X-rays to detect hidden metallic and nonmetallic objects, such as weapons and explosives, without physical contact. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images

New Airport Body Scans Don't Detect All Weapons

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Bright Lights, Big Headache: A Study Explains

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It has eight sides, which makes it a scientific "abomination," according to chemist Thomas Koop. iStockphoto.com hide caption

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iStockphoto.com

What's Wrong With This Snowflake?

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Paul Vernon/AP

Sounds During Sleep May Help You Remember

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Success Boosting Monkey Muscle Could Help Humans

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