Potential Nuclear Crisis in Japan

Here's a primer on the situation.

Here's an interactive diagram of what's happening

Here's some more background on nuclear meltdowns

Here's the conversation that CNN's been referencing on-air

Update: And here's further evidence that this could be a focusing event that results in fewer nuclear power plants in the future: an editorial in the NY Times arguing that we should be cautious about building and maintaining nuclear power plants.

Update (3-21): Here's a summary of the problems with each reactor -- the situation finally seems to be improving, though it's certainly not over