What will happen if there is a nuclear explosion in Japan?

Question:

Will it effect the entire world? I dont know much about nuclear plants. Thank you in advance.

Answer:

It would be a terrible disaster in Japan, and some people would die.

But most people have been evacuated for safety, so the death toll wouldn't be that high.

As for the rest of the world, we may be 'advised' to stay inside is any clouds head in our direction - but for the most part, things should continue as normal.