Here are a lot more additions to The Best Sites For Learning About The Japan Earthquake & Tsunami:

Earthquake in Japan: Path of destruction is an interactive from The Washington Post.

Teaching Ideas: The Earthquake and Tsunami in Japan comes from The New York Times Learning Network.

TIME Magazine has published a second slideshow.

Japan earthquake: tsunami warning across Pacific ocean is a very accessible series of resources from the CBBC Newsround.

A Japanese nuclear plant may be in jeopardy, as you can see in this NY Times video report:

Radiation 1,000 times normal at Japan nuke plant is a similar report from MSNBC.

The Wall Street Journal has several good interactives and slideshows:

Disastrous Japan Earthquakes

Shaky Ground

Strong Earthquake Strikes Japan