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Gamma-ray bursts are the brightest--and, until recently, among the least understood--cosmic events in the universe. Discovered by chance during the cold war, these evanescent high-energy explosions confounded astronomers for decades. But a rapid series of startling breakthroughs beginning in 1997 revealed that the majority of gamma-ray bursts are caused by the explosions of young and massive stars in the vast star-forming cauldrons of distant galaxies. New findings also point to very different origins for some events, serving to complicate but enrich our understanding of the exotic and...

In Oakland, California, in 1966, community college students Bobby Seale and Huey Newton armed themselves, began patrolling the police, and promised to prevent police brutality. Unlike the Civil Rights Movement that called for full citizenship rights for blacks...