(2008) A new report from the Pew Research Center projects that immigration will propel the U.S. population total to 438 million by 2050, from 303 million today (see Figure 1). Along with this growth, the racial and ethnic profile of Americans will continue to shift—with non-Hispanic whites losing their majority status.
Carbon dioxide emissions have grown dramatically in the past century because of human activity, chiefly the use of fossil fuels such as oil and coal, as well as changes in land use such as cutting down forests.
By law, the U.S. government is required to count the number of people living in the United States every 10 years.
(2008) The U.S. population is aging: The ratio of elderly to the working-age population in the United States will roughly double over the next few decades, straining the finances of the U.S. Social Security system and other government programs.
(September 2007) The world is on the verge of a shift: from predominantly rural to mainly urban.
(2014) A convergence of demographic trends and disparities is contributing to a new economic reality for the U.S. population, characterized by higher levels of poverty and inequality.
Already one of the world's major centers of displaced people, Colombia faces the likelihood that the latest escalation of a multifaceted civil war will force even more people from their homes and increase the risks of illness and death.