>Breeder reactors like fast neutron reactor main advantage is less radioactive waste, Generally they will also have more passive safety features and in the cas

>Breeder reactors like fast neutron reactor main advantage is less radioactive waste, Generally they will also have more passive safety features and in the case of something like the IFR, an even smaller chance of proliferation. Less nuclear waste might be the most important issue to most people though. >... there is enough of uranium in world to feed the old light water reactors for thousands of years too True, looks like I was really using the wrong units of time. Scientific American had an article where they estimated a 60,000 year supply at current rates. If we switched to the world using breeder reactors, probably more like hundreds of thousands or millions of years of fuel depending on the growth rate you use for consumption.