The stuff that comes out of your ass when you fart. Holy Shit you must of had a gallon of methane come out of your ass just now. That fucking reeks you fucking piece of shit. by WhatTheFuck March 27, 2005.
Nuclear energy may get mentioned in the same breath with renewable power sources like wind and solar because it is clean-burning and therefore more environmentally sound than oil or coal. But nuclear energy is, in fact, a nonrenewable resource. The problem lies in the element that enables nuclear power: uranium. The element uranium is abundant, but only a certain type of uranium, U-235, is used to fuel nuclear power. U-235 must be extracted from mined and processed uranium.
Non-renewable energy is energy from fossil fuels (coal, crude oil, natural gas) and uranium. Fossil fuels are mainly made up of Carbon. It is believed that fossil fuels were formed over 300 million years ago, when the earth was a lot different in its landscape.