Joe Palca's perfectly toasted marshmallow. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR
Benjamin Arthur for NPR

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

itoggle caption Benjamin Arthur for NPR
iStockphoto.com

Bo Van Pelt celebrates his hole-in-one during the final round of the Masters on April 8. New research suggests that golfers may be able to improve their games by believing the hole they're aiming for is larger than it really is. Andrew Redington/Getty Images hide caption

itoggle caption Andrew Redington/Getty Images

The last lunar eclipse of 2011 as seen from the San Gabriel Valley east of Los Angeles on Dec 10, 2011. Frederic J. Brown/AFP/Getty Images hide caption

itoggle caption Frederic J. Brown/AFP/Getty Images

The Messenger spacecraft is depicted over the Calvino Crater on Mercury in this enhanced-color image of the planet's surface. NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington hide caption

itoggle caption NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Astronauts may have a particular affinity for Tabasco sauce in space because their sense of smell and taste is distorted. John Rose/NPR hide caption

itoggle caption John Rose/NPR

The Large Synoptic Survey Telescope, seen in this artist's rendering, will be built on the peak of the Cerro Pachon mountain in Chile and will survey every patch of the night sky. The data the telescope will collect will allow researchers to "answer fundamentally different questions about the universe," says one astronomer. Todd Mason/LSST Corp. hide caption

itoggle caption Todd Mason/LSST Corp.

Mosquitoes like this one can carry the virus that causes dengue fever. James Gathany/CDC Public Health Image Library hide caption

itoggle caption James Gathany/CDC Public Health Image Library

Giant Magellan Telescope Giant Magellan Telescope hide caption

itoggle caption Giant Magellan Telescope

AquaBounty's genetically modified salmon is seen swimming behind a much smaller wild Atlantic salmon of the same age. AquaBounty has been trying to get government approval to sell its salmon for more than a decade. Courtesy of AquaBounty Technologies hide caption

itoggle caption Courtesy of AquaBounty Technologies