Japan Floods Nuclear Reactor Crippled by Earthquake to Avert a Full 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 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.

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 Tries Using Seawater to Cool Damaged Reactor  —  TOKYO—Japanese officials continued their battle to control dangerous reactor overheating in the nation's worst nuclear accident that followed Friday's earthquake, as they resorted to an unprecedented attempt to cool the reactor with seawater.

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.