Electricity generation. The production of electricity in 2013 was 23,322TWh. Sources of electricity were coal and peat 41%, natural gas 22%, hydroelectric 16%, nuclear power 11%, oil 4%, biomass and waste 2% and other sources 4%.
The nine Supreme Court Justices on the Supreme Court of the United States are the final arbiters on whether or not a law passed by the legislative branch is constitutional.
Nine judges â called justices â make up the Supreme Court of the United States. The Supreme Court is led by one justice, called the Chief Justice of the United States. The other eight justices are known as Associate Justices. Justices are nominated by the President and confirmed by the Senate. Once confirmed, justices serve for life. They only leave the Supreme Court if they die, resign, retire, or are convicted on impeachment for bad behavior. There is no long list of special requirements to be appointed a Supreme Court justice.