He's flown the space shuttle five times, and performed eight spacewalks to service the Hubble telescope. Now astronaut and astrophysicist John Grunsfeld heads up NASA's Science Mission Directorate, where he manages scientific investigations on the home planet--and beyond.
Originally published on Fri April 27, 2012 12:44 pm
Can the repeated brain injuries suffered by some athletes cause problems with brain function later in life? A new play, Headstrong, opening next week in New York, looks at athletes and head trauma, and the high price some athletes end up paying for playing the game.
A private company has unveiled plans to mine precious metals and water from nearby asteroids. Planetary Resources co-founder Eric Anderson discusses the various stages of the mining process and how the excavated minerals could impact future space exploration and innovation on Earth.
After tough criticism from Republicans, the Obama administration withdrew its proposal for new rules to limit child labor on farms.
The AP reports that yesterday, the Labor Department withdrew the proposed rules "that would ban children younger than 16 from using most power-driven farm equipment, including tractors. The rules also would prevent those younger than 18 from working in feed lots, grain bins and stockyards."