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.
All Justices of the Supreme Court. Since the Supreme Court was established in 1789, 113 persons have served on the Court. Five individuals in this group were confirmed for associate justice, and later confirmed for chief justice separately.