CERN successfully circulated the first proton beam around the Large Hadron Collider, the world's largest and most powerful particle accelerator.

CERN scientists successfully circulated the first proton beam around the full 27-kilometer ring of the Large Hadron Collider, the world's most powerful particle accelerator.

Ten gunmen from Pakistan-based Lashkar-e-Taiba stormed hotels, a train station, and a Jewish center across Mumbai, beginning a 60-hour siege that killed 166 people.