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 …

Battle to stabilise earthquake reactors  —  Attention is focused on the Fukushima Daiichi and Daini nuclear power plants as Japan struggles to cope in the aftermath of its worst earthquake in recorded history.  An explosion on site did not damage containment.  Sea water injection continues after a tsunami warning.

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.

Report: Explosion at Japanese nuclear plant  —  Editor's Note: Read live blogging of the Japan tsunami and earthquake.  Are you there?  Send your video, pictures to iReport.  —  (CNN) — An explosion has been reported at a nuclear plant in northeastern Japan's Fukushima prefecture …

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.