Apollo 7 astronaut Walter Cunningham dead at 90

Walter Cunningham, the last surviving astronaut from the first successful crewed space mission in NASA's Apollo program, died Tuesday in Houston. He was 90.

Prototype particle detectors project smashes milestone

Carnegie Mellon University physicists in Pittsburgh are one step closer to building new particle detectors for the Compact Muon Solenoid (CMS) experiment at CERN's Large Hadron Collider (LHC).