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.
1 The Supreme Court consists of seven justices: the chief justice and six associate justices. 2  The justices are elected to serve eight-year terms. 3  Every two years one justice is selected by the court as chief justice. 4  Although justices are nominated by political parties, they are elected on a nonpartisan ballot.