All Things Nuclear (Union of Concerned Scientists)

http://allthingsnuclear.org/post/5173479472/fukushima-7-week-update

While details of the damage to the nuclear fuel at the site are not known, it appears that more total fuel damage has occurred during this accident than all previous reactor accidents combined.

Currently all of these reactors and pools are being cooled, although normal cooling systems have not been restored. They will require active cooling for many months or years because of the high levels of radioactivity in the fuel they contain.

Links with information about the situation at Fukushima Dai-Ichi:

UCS website and allthingsnuclear.org blog posts on the Japan crisis

Tokyo Electric Power Company (TEPCO) press releases (in English)

TEPCO videos and photos of Fukushima Dai-Ichi

International Atomic Energy Agency (IAEA) website

New York Times reactor status

Bulletin of the Atomic Scientists updates by Tatsujiro Suzuki

Japan Atomic Industrial Forum updates