Re: Quite a bit of nuclear fallout
"I think the most recent analyses suggest that a big Orion (say, something big enough to put an entire self-sustainable colony on Mars in a single voyage, supplies and all, maybe a 25,000-tonne ship) could be launched for the statistical "price" of one or two extra cancer cases worldwide."
That's really interesting. Do you have a source for that? I'm fervently pro-nuke myself and I'd love to have that in my, ahem, arsenal.