Catherine Wong used electrical components to build an electrocardiogram that sends data by cellphone. Courtesy of Catherine Wong hide caption

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Courtesy of Catherine Wong

Roger Angel, an astronomer at the University of Arizona, stands in front of his new project: a solar tracker. Angel wants to use the device to harness Arizona's abundant sunlight and turn it into usable energy. Jason Millstein for NPR hide caption

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Jason Millstein for NPR

Telescope Innovator Shines His Genius On New Fields

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Adam Steltzner, the leader of the rover's entry, descent and landing engineering team, cheers after Curiosity touched down safely on Mars on Sunday. Bill Ingalls/NASA/Getty Images hide caption

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Bill Ingalls/NASA/Getty Images

So You Landed On Mars. Now What?

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NASA engineer Adam Steltzner led the team that designed a crazy new approach to landing on Mars. Rachael Porter for NPR hide caption

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Rachael Porter for NPR

Crazy Smart: When A Rocker Designs A Mars Lander

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Joe Palca serves up some hot tea on a very hot day at Teaism in Washington, D.C., last week. Maggie Starbard/NPR hide caption

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Maggie Starbard/NPR

Cool Down With A Hot Drink? It's Not As Crazy As You Think

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Benjamin Arthur for NPR

'Eliminate Dengue' Team Has A Deep (Lab) Bench

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Scott O'Neill wants to rid the world of dengue fever by infecting mosquitoes with bacteria so they can't carry the virus that causes the disease. Benjamin Arthur for NPR hide caption

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Benjamin Arthur for NPR

A Scientist's 20-Year Quest To Defeat Dengue Fever

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