not to mention the little U238 atom. Safest means thus far with the least environmental impact other than solar, hydro and wind.
That would actually be the U235 atom (U-238 isn't fissionable). You CAN get fissile fuel from U-238 by "breeding" Pu-239, which IS fissionable. Hence the long-term need for breeder reactor technology.
Yeah, I'm being picky.