Japan Floods Nuclear Reactor Crippled by Quake in Effort to Avert Meltdown  —  TOKYO — Japanese officials took the extraordinary step on Saturday of flooding a nuclear reactor with seawater in a last-ditch effort to avoid a nuclear meltdown, after an explosion there escalated the emergency caused …

Japan's fears of nuclear mayhem recede as nuclear reactor starts to cool  —  Physicists feared second explosion would create radioactive cloud as residents panicked, jamming city's exit roads  —  For a few unnerving hours, Japan faced a bleak and unsettling prospect.

Japan warns of small radiation leak at nuclear plant  —  Pressure in one of the six reactors is considerably higher than normal, Japan's nuclear agency says  —  Japanese authorities have warned there could be a small radiation leak from a nuclear reactor whose cooling system was knocked out by the earthquake.

Bachmann makes gaffe in New Hampshire  —  Rep. Michele Bachmann (R-Minn.), a possible presidential contender in 2012, made an embarrassing gaffe Saturday morning in a speech to a group of conservatives in New Hampshire.  —  Bachmann erroneously touted New Hampshire as the site of the first battles of the American Revolutionary War.