"They were caused by the space station Weil built. He used the stuff to power it, so when Zero, Lumine, and Forte blew it up, the debris fell out of orbit. Sometimes a few pieces that were missed still fall down, though I know there have been attempts to get all the pieces still in orbit."

"It's like this big spiral around Earth, because of the fallout pattern. I think maybe a third of the surface... counting ocean areas."