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, called justices, form the United States Supreme Court. One of the justices serves as the chief justice, while the remaining eight serve as associate justices. The nine current Supreme Court justices include Chief Justice John G. Roberts Jr., Antonin Scalia, Anthony M. Kennedy, Clarence Thomas, Ruth Bader Ginsburg, Stephen G. Breyer, Samuel Anthony Alito Jr., Sonia Sotomayor and Elena Kagan.