While products are generally thought of as tangible personal property, products liability has stretched that definition to include intangibles (gas), naturals (pets), real estate (house), and writings (navigational charts).
According to the US Census Bureau's population clock, the estimated 2018 United States population (February 2018) is 327.16 million. This is a bit higher than the 326.77 million estimated by the United Nations.
The term world population commonly refers to the total number of living humans on Earth at a given time. As of 12 October 2009, the Earth's population is estimated by the United States Census Bureau to be 6.79 billion. http://en.wikipedia.org/wiki/World_population.