An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239.
The nuclear approach I'm involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true - many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions. Bill Gates
The part of uranium that's fissile - when you hit it with a neutron, it splits in two - is about 0.7%. The reactors we have today are burning that 0.7%. Bill Gates
Russia is opposed to the proliferation of mass destruction weapons, including nuclear weapons, and in this context we call upon our Iranian friends to abandon the uranium enrichment programme. Vladimir Putin
One pound of uranium is worth about 3 million pounds worth of coal or oil. James Lovelock
At the height of Iraq's clandestine nuclear weapons program, which nearly succeeded in building a bomb in 1991, Tuwaitha incorporated research reactors, uranium mining and enrichment facilities, chemical engineering plants and an explosives fabrication center to build the device that detonates a nuclear core. Barton Gellman