Gas-Cooled Fast Reactors (GFR), Lead-Cooled Fast Reactors (LFR), Sodium-Cooled Fast Reactors (SFR), Supercritical Water-Cooled Reactors (SCWR), Very High-Temperature Gas Reactors (VHTR), and Molten Salt Reactors (MSR) are the different types of Generation IV nuclear reactors (Chapter). All of these nuclear reactors are sustainable, economical, safe, reliable, proliferation resistant and physically secured. The Generation IV reactors have a more efficient use of Uranium (DOE). These Generation IV reactors are now safer for the environment because the high-level of the radioactive waste production has been reduced significantly. There are still large amounts of radioactive wastes that need to be managed over a long period of time in disposable facilities. On the other hand, research supports there will be far less toxicity in the new designs of the Generation IV reactors (Kromp 2). Of the six reactors, four of them are said to be “fast breeders,” meaning they have the ability to obtain full energetic potential from the element Uranium. Along with the Generation II and Generation III reactors, there will still be zero levels of CO2 emitted…