ScienceUS Produces First Plutonium In 30 Years To Power Future NASA Space Missions NASA is close to running out of the isotope that creates power for space probes, so scientists are cranking up production. They've produced the first Pu-238 isotope created in 3 decades.by Jim Algar
ScienceFailure to launch: A look at past rocket disasters in light of the Antares explosionby James Maynard
WATCH: Runner Spends Year Using Exercise Tracker to Create Elaborate Stick Figure Art on City Streets