Smart Planet videos of the week: How to protect Earth from an asteroid strike
Former astronaut and physicist Ed Lu discusses the need to develop an early-warning and precision tracking/guidance system to prevent asteroids from hitting the planet.
Former astronaut and physicist Ed Lu discusses the need to develop an early-warning and precision tracking/guidance system to prevent asteroids from hitting the planet.
Has the dream of hydrogen-powered cars gone up in a puff of vapor? Has it evaporated?
Solar energy monitor doesn't sound exciting, but it could take financial sting out of putting panels on a building.