Scientific American notes that the world's uranium supply, the element used to create nuclear energy, can operate nuclear reactors for 200 years or more at stable consumption levels. Each nuclear reactor requires the use of low-enriched uranium fuel to create electricity. It is estimated that nuclear plants worldwide use approximately 70,000 metric tons of uranium to produce 2.8 trillion kilowatt-hours of electricity each year.Continue Reading
According to Scientific American, the Nuclear Energy Agency notes that as of 2009, approximately 5.5 million metric tons of uranium have been identified, and an estimated 10.5 million metric tons remain undiscovered. These combined amounts provide an estimated 230 years of nuclear energy. Uranium can be extracted from seawater in the future, but it is not currently financially feasible. This could yield an additional 4.5 billion metric tons of uranium that would supply world-wide nuclear power for an estimated additional 60,000 years at a stable consumption level, based on 2009 uranium usage amounts.
Scientific American also notes that though the world's nuclear reactors were initially expected to last no more than 40 years, many of them have been given licenses that extend use to 60 years. It is believed that the reactors are safe to operate for up to 80 years or more.Learn more about Natural Resources
Plutonium has 94 protons in its nucleus, compared to the 92 in uranium, and is typically produced in nuclear reactors as a byproduct. Although both plutonium and uranium are rare, naturally occurring elements, plutonium is no longer found in the earth's crust, but uranium is actively mined. There is enough uranium inside the Earth that its radioactive decay is believed to heat the Earth's core.Full Answer >
Raising HDL cholesterol levels requires changes such as quitting smoking, dropping pounds, exercising regularly, moderating alcohol consumption and eating healthier fats, notes Mayo Clinic. As HDL cholesterol quantity increases, LDL cholesterol decreases, as the HDL cholesterol pulls the LDL variety out of the arteries and takes it to the liver.Full Answer >
In 2014, the global oil supply was 93,201 thousands of barrels per day, according to the U.S. Energy Information Administration. Since 2010, the world oil supply has been on the rise. In 2014, the United States overtook Saudi Arabia as the world's top oil producer, pumping out 12.5 million barrels a day, notes CNN Money. In addition to these two countries, Russia, China and Canada account for the top five producers, adds Oil Price.Full Answer >
Disadvantages of fossil fuels include contributions to global warming, environmental pollution and their finite supply. Fossil fuels, which include coal, oil and natural gas, are the primary source of energy in the United States, accounting for 85 percent of the country's fuel usage, as of 2014.Full Answer >