According to the World Bank, the United States has a surface area of 9,632,030 square kilometers, or 7.19% of the world’s total surface area. That is enough to make the United States rank third in that category. Russia ranks first, with a surface area of 17,098,240 square kilometers, or 12.76% of the world total.
According to the British Geological Survey, in 2007 the United States produced 444,000 tonnes of perlite, which is enough to make the United States rank third in that category. China ranks first, producing 1,400,000 tonnes.
According to the 2008 Durex Face of Global Sex Report, 76.3% of Americans are confident that they know where to get information about sex, which makes the United States rank eighth out of twenty-six countries ranked in that category. Brazil ranks first, with 79.9% of Brazilians confident that they know where to get information about sex.
According to the Tyndall Centre for Climate Change Research, the mean temperature in the United States in December is -2.4 degrees celsius, which makes the United States rank twentieth in that category. Slovakia ranks first, with a mean December temperatures of -33.1 degrees celsius.
Note: The above graph is incorrect, and the U.S. actually ranks 19th, with Russia ranking 1st. I misread the data and the mistake was pointed out to me. The correct graph is below.
According to the World Bank, American farms had an average cereal yield of 6,704 kilograms per hectare in 2008, which was enough to make the United States rank thirteenth in that category. Belgium ranks first, with a yield of 8,576 kilograms of cereal per hectare.