> do we have any idea about how long Nuclear power will last, If we produce lets say, 50 percent of all our energy needs from it ? This is hard to estimate pre

> do we have any idea about how long Nuclear power will last, If we produce lets say, 50 percent of all our energy needs from it ? This is hard to estimate precisely, since we don't know how much uranium is yet to be discovered. At the low-end, using current estimates for mineable Uranium, and today's light water reactors, about 460 years. At the high end, using newer breeder reactors and extracting uranium from seawater, as much as 240,000 years. Using a reasonable estimate for mineable uranium, and newer breeder reactors, about 120,000 years. Let's be conservative and say "at least a few thousand years". Personally, I'd say if we can't get off Earth and find some new fuel sources in a few thousand years, we deserve whatever happens. And frankly, if it takes us more than 200 years to get useful fusion reactors, something has probably gone wrong, and we're back to burning wood in caves anyway. Here's a source: https://www.scientificamerican.com/article/how-long-will-global-uranium-deposits-last/ https://www.scientificamerican.com/article/how-long-will-glo...