Big tech earnings week will reveal economic trends

(AP) -- The technology sector is often talked about as if it were a unified front, an easy-to-define monolith. People say technology stocks rose or technology stocks fell. Tech helped drive a huge boom in the 1990s, and ...

Microbot motors fit to swim human arteries (Video)

(PhysOrg.com) -- A range of complex surgical operations necessary to treat stroke victims, confront hardened arteries or address blockages in the bloodstream are about to be made safer as researchers from the Micro/Nanophysics ...