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Opinion, arguments & analyses from guest experts and from the editors of Scientific American

Does Computer-Assisted Cancer Screening Help Radiologists? Not Really

To find abnormal tissue in mammograms, radiologists have increasingly relied on computers to spot the potential tumors. In fact, three out of four screening mammograms include computer-assisted detection (CAD) in the U.S., and Medicare pays for the procedure to the tune of $30 million annually...

July 28, 2011 — Larry Greenemeier

Feel the Burn: How Do Scientists Count Calories?

Counting calories today is as easy as checking the label in a grocery store, or perusing the menu in a restaurant. But how accurate are these numbers, and how do food manufacturers and restaurants come up with them in the first place?...

July 25, 2011 — Sophie Bushwick

FDA Starts to Tackle Regulation of Health and Medical Apps

On-the-go doctors can already see your latest MRI or CT scan via a smart phone or tablet. But would you want them to be able to download an app that essentially turns an iPad into an EKG to determine if you are having a heart attack?...

July 22, 2011 — Katherine Harmon

A Tribute to All 135 of NASA's Space Shuttle Missions [Video]

Now that Atlantis has safely returned to Earth and the 30-year space shuttle program has drawn to a close, it's time to look back at the reign of Discovery, Atlantis, Endeavour and the tragically shortened careers of Challenger and Columbia ...

July 21, 2011 — John Matson

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Memorial Day Flash Sale

Memorial Day Flash Sale

How Smartphones Affect Mental Health