David Kestenbaum
David Kestenbaum is a correspondent for NPR, covering science, energy issues and, most recently, the global economy for NPR's multimedia project Planet Money. David has been a science correspondent for NPR since 1999. He came to journalism the usual way — by getting a Ph.D. in physics first.
In his years at NPR, David has covered science's discoveries and its darker side, including the Northeast blackout, the anthrax attacks and the collapse of the New Orleans levees. He has also reported on energy issues, particularly nuclear and climate change.
David has won awards from the American Association for the Advancement of Science, the American Physical Society and the Institute of Electrical and Electronics Engineers.
David worked briefly on the show This American Life, and set up a radio journalism program in Cambodia on a Fulbright fellowship. He also teaches a journalism class at Johns Hopkins University.
David holds a bachelor's of science degree in physics from Yale University and a doctorate in physics from Harvard University.
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NASA releases plans for a new spacecraft that would replace the space shuttle. The vehicle is part of a system that will be capable of putting astronauts on the moon by 2018, laying the groundwork for space travel to Mars. NASA says the new system is designed to be 10 times safer than the space shuttle.
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The panel that oversaw NASA's effort to relaunch the space shuttle after the Columbia disaster issues its final report, giving NASA high marks. Still, critics outline problems with the agency's ability to manage the safety and reliability of the shuttle.
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The Space Shuttle Discovery was forced to postpone landing in Florida Monday morning because of low clouds and poor visibility. NASA has set the landing for early Tuesday, and is contemplating alternative landing sites.
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Astronaut Stephen Robinson pulled out two pieces of filler material that were protruding from Space Shuttle Discovery's belly. Robinson was tethered to a boom arm to reach the underside of the craft.
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Astronaut Steve Robinson successfully removes two small pieces of fabric that were poking out of the shuttle's heat shield. NASA engineers worried the fabric could cause superheated air to damage the shuttle when it returns to Earth next week.
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NASA astronaut Steve Robinson says he's ready to make repairs on the heat shields of Space Shuttle Discovery. Robinson will venture to the underside of the spacecraft's nose Wednesday. This will be the first time an astronaut has tried to make repairs beneath an orbiting shuttle.
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The Space Shuttle Discovery has docked with the International Space Station. In doing so, it did a controlled back flip to enable cameras on the ISS to photograph its belly for damage. So far, there is no indication that the shuttle was damaged on liftoff.
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NASA will try to launch the space shuttle Discovery Tuesday morning. A fuel sensor problem caused the launch to be delayed two weeks ago. NASA officials say all sensors were working properly when they refilled the fuel tank overnight. They estimate the chance of weather cooperating at 80 percent.
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NASA sends Space Shuttle Discovery into orbit in the first shuttle launch since the Columbia accident, which killed seven astronauts. NASA managers are now analyzing data to ensure the shuttle's heat-resistant surfaces were not damaged during launch.
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The crew carries much-needed supplies to the International Space Station. They'll also be testing modifications made after the Columbia disaster two and half years ago. The launch was scrubbed two weeks ago because of a problem with a fuel sensor system.