The China syndrome threat?

Answer:

You should just watch the movie, but it's if the idea that if you let a nuclear meltdown occur, it would melt through the earth, all the way to China. Of course, it could only melt its way to the earth's core.

First answer by JoeyJoJoJrShabadoo. Last edit by JoeyJoJoJrShabadoo. Contributor trust: 4 [recommend contributor recommended]. Question popularity: 1 [recommend question].