> On the other hand, assuming we could indeed send our manure for $1400/kg, would it be the most reasonable way to get rid of radioactive waste? It sounds like a Simpsons episode, but the cost seems so low that it sounds like the next step.

It sounds awful at first glance, but I wonder what the environmental impacts actually are of nuclear waste de orbiting and spreading evenly over the atmosphere. Normalized out per kwh, environmental radiation release might be less than the equivalent coal power plant? I'll have to break out an excel sheet later.