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Robert Downey Jr. brings bionic arm to boy

A boy with a partially developed right arm got a bionic surprise thanks to Iron Man himself -- Robert Downey Jr.

NASA Atlas V launch

NASA launches Atlas V rocket

NASA launches a rocket and spacecraft with the hopes of learning more about the planet's magnetic field.

Water on Mars

NASA discovers ancient oceans on Mars

CNN's Adam Dunnkaey looks at how the dusty Martian surface was once a vast ocean

Beer reply

YouTube commercial buyers upset about ISIS placement

Advertisers on Google's YouTube site get randomly placed with videos. When several major brands were paired with an ISIS recruitment video, they were incensed.

Rocket explosion and private sector

What rocket explosion means for private sector

Tuesday’s rocket explosion will have little effect on the private sector working with NASA to get Americans into space.

OK Go unicycle video

The technology behind OK Go's new video

Meet the Japanese man behind OK Go's latest music video that's gone viral.