Musk explains his 'cargo route' to Mars

SpaceX chief Elon Musk shed light on his new plan to send an unmanned spaceship to Mars as early as 2018, as part of his quest to some day colonize the Red Planet.

'Hyperloop' travel idea gains fans, if not backers (Update)

Billionaire entrepreneur Elon Musk released rough plans last week for a "Hyperloop" that would shoot capsules full of people at the speed of sound through elevated tubes connecting Los Angeles and San Francisco. Then he urged ...

Inventor Musk to share plans for high-speed travel (Update)

Twice as fast as an airplane, cheaper than a bullet train and completely self-powered: that's the mysterious transportation system for which inventor and entrepreneur Elon Musk is promising to reveal design plans Monday.

Will robots take over the world?

Robots can do a lot for us: they can explore space or they can cut our toenails. But do advances in robotics and artificial intelligence hold hidden threats? Three leaders in their fields answer questions about our relationships ...

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