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.
Known as the court of last resort, the Supreme Court has the final authority to interpret constitutional questions and federal law and to uphold or reverse decisions made by lower courts. To date, there have been 112 justices (including 17 chief justices) in the courtâs history, 108 men and four women. Find out some surprising facts about the job (hint: there are no official qualifications) and learn about how the nationâs highest court works and has changed over the years.