Clues begin to emerge in London bomb blasts

LONDON - Police radically revised the timing of the deadly blasts that tore through the London Underground, saying Saturday that the bombs were detonated just seconds apart - not 26 minutes as first reported. The explosions were so intense that none of the 49 known dead has yet been identified. Many bodies still lay buried in a rat-infested subway tunnel and frantic relatives begged for word about others still missing in the worst attack on London since World War II. Police indicated as many as 50 additional victims were unaccounted for. In a sign of the continued state of alert, police evacuated 20,000 people from Birmingham's central entertainment district Saturday night after intelligence indicating a "substantial threat," said Stuart Hy