https://wordpress.com/post/travellingintimeandspace.wordpress.com/3584 Kimmo Huosionmaa One of the worst nuclear accidents, what can happen is that the reactor would be driven in the condition, what is known as the China syndrome is the case when the nuclear material inside the reactor is melting. Because the fissile material of the nuclear power plants is so heavy, the China syndrome would cause the global threat. That melted Uranium would burn it's way to the Earth's core and in the center of our planet. And in the worst scenario that material could come out from the other side of the earth, because of the pendulum effect. That effect is caused because the material, what would drop inside the tunnel, what goes thru the planet will start to travel from the side to side. And in theory, the nuclear material would act the same way as the mass in the tunnel. It would travel side by side until friction would stop it. That situation is thought to be the worst case scenario ...