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Time To Overhaul America's Aging Bridges?

Five years after the deadly collapse of the I-35W bridge in Minneapolis, experts say nearly 8000 of America's bridges are still in dire need of repair--including landmark structures like the Brooklyn Bridge. But how much will it cost? And is there the political will to do it?
NPR

Unwinding The Cucumber Tendril Mystery

How a cucumber creates its curling tendril has stumped scientists for centuries, including Charles Darwin and Asa Gray. With the help of time-lapse photography and prosthetic tendril fabricated in the lab, physicist Sharon Gerbode, biologist Joshua Puzey and colleagues figured out why tendrils twist, according to a new study in Science.
NPR

Meet Your Ancient Relatives: The Denisovans

Reporting in Science, researchers write of sequencing the genome of a young Denisovan girl--an archaic human distantly related to Neanderthals and modern humans. Geneticist David Reich discusses the tale the genome tells about the Denisovan people and their interactions with modern humans.
NPR

The World Remembers Neil Armstrong

After serving in the Korean War and flying over 200 models of aircraft as a test pilot, Neil Armstrong used his experience to gently guide the lunar lander onto the untouched surface of the moon before making those first historic steps. He died last week, at age 82.
NPR

Gazing Up At A Double Sun

Astronomers using NASA's Kepler planet-hunting telescope have found multiple planets orbiting a double star system, 4,900 light-years from Earth in the constellation Cygnus. Jerome Orosz, lead author on a paper describing the find, explains how the astronomers made the discovery and the importance of the find for the search for habitable planets.

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