The Int'l Atomic Energy Agency has the most up-to-date and reliable info I've found so far on Fukushima No. 1: [source: Japan Earthquake Update (20 March 21:00 UTC) ]

As of March 20th, seawater is being injected into the reactor pressure vessels for units 1, 2, and 3; unit 3 is emitting white smoke/vapor but with less intensity than yesterday. ( Read more... )