Meltdown threat rises at Japan nuke plant - Yahoo!7

There are now reports that there is a fire in reactor Number 4 at the Fukushima reactor.

There has been another explosion at the Fukushima reactor. Japanese NHK television reports that the Number 2 reactor has exploded, releasing radiation 10,000 above normal levels.

Up to half the fuel rods have been exposed and there are fears that the vessel containing the rods has cracked opening up the possibility that radioactive water is at risk of leaking outside the plant.

Japan's meteorological agency did report one good sign. It said the prevailing wind in the area of the stricken plant was heading east into the Pacific, which experts said would help carry away any radiation.