Grim warnings are given in tonight's (Mar 21) Four Corners by nuclear experts and activists who have been interviewed over the past week.

American Damon Moglen, director of Friends Of The Earth's climate and energy project, points to the presence of as much as a quarter of a tonne of plutonium in Fukushima's No. 3 reactor, which suffered an explosion last Monday.

"The problem there is, if that plutonium fuel is melting inside the core, if it's being vented out or if an explosion were to break the containment open, we could have - and we have as much as a quarter of a tonne of additional plutonium in that reactor - we could have radioactive releases containing plutonium, which would be just yet another horror to have to deal with," he said.

Plutonium is extremely toxic and has a considerable half-time.

Do you believe the worst is over?

PS. Did you know that KELP and GARLIC can useful in protection against radiation?