NHK, the Japanese public broadcasting outlet, and The Mainichi Daily News are both good news sources.
Via Naomi Klein on Twitter:
Naomi Klein: No energy that can poison entire populations during disasters deserves to be called "clean."Green Action is located in Kyoto and under the direction of long-time environmentalist Aileen Mioko Smith. Her husband, William Eugene Smith, photographed Minamata survivors.
daphnewysham: NIRS (Nuclear Information and Resource Service) is providing regular updates on the Fukushima reactor explosion:
March 11, 2011: BREAKING NEWS. Fact sheet on Fukushima reactors and aftermath of Japan earthquake. Updated 5:30 pm, Saturday, March 12. Report that Unit 3 has lost cooling. Of particular concern: Unit 3 uses plutonium-based fuel.
There are currently 23 General Electric Mark I reactors in the U.S.--the design that exploded at Fukushima. A top Atomic Energy Commission official first proposed banning this design nearly 40 years ago. List/fact sheet.
Statement of CNIC (Tokyo-based Citizens' Nuclear Information Center), March 12, 2011
Green Action blog on Japan nuclear crisis, includes updates, video links.
TMI Alert piece on similarities/differences between Fukushima and Three Mile Island events.