Uranium based nuclear power is unsafe in the presence of natural disasters.
Fossil fuels are running out, and burning them are bad for the environment.
Classic sustainable sources like solar and wind do not provide enough energy to meet the world's needs.
Kirk Sorensen gave an inspiring TED talk explaining how Thorium power can solve all the world's energy needs. It's a fuel so common we will never run out. There are no safety issues.
LFTR's are the only viable option on the table for actually meeting the world's energy demands in a sustainable way, yet nobody is bothering to build them. We need government stimulus to pave the way for a sustainable future.
http://www.ted.com/talks/kirk_sorensen_thorium_an_alternative_nuclear_fu...