A new engine design could significantly improve fuel efficiency for cars and SUVs, at a fraction of the cost of today’s hybrid technology.
Not only does student participation decline dramatically throughout the new generation of Web-based courses, but the involvement of teachers in online discussions makes it worse.
The advanced-biofuels industry is in danger of withering away.
Building solar and wind projects in the wrong place is wasting billions of dollars in Europe.
Several ex-NASA officials are behind a company that plans to offer trips by 2020.
Orbiting spacecraft could be refueled with water taken from planetoids—but some experts doubt the economics.
Our cosmos was “bruised” in collisions with other universes. Now astronomers have found the first evidence of these impacts in the cosmic microwave background.
Cars with advanced batteries get 100 mpg and boast far greater range than all-electric vehicles.
A bold experiment by the One Laptop Per Child organization has shown “encouraging” results.
UN-scale treaties might be dead, but who needs everyone to get on board?