@Xarthor: The waste we got under control, all other sources that polute our planet we do not. Like cosmic and earth radiation, food, everyone else's body. At average you get about 300 mrem a year. A nuclear powerplant produces 0.01 mrem a year to your body. It is as good as neglectible (and a coal power plant produces thrice as much radiation in the air!). When those commercial space companies start commercialising their space flights in the next 20 years, nuclear waste is no problem anymore whatsoever. And even if it would take 50 years, gathering 50 years of nuclear waste pending to be shot in space is not that much considering the large amount of storage space we have available on earth.
