The planet's population is projected to reach 6.5 billion at 7:16 p.m. EST Saturday, according to the U.S. Census Bureau and its World Population Clock.Quite a milestone.
Thomas Malthus, the 18th-century thinker who famously predicted the human population would outrun its food supply, would be astounded.
Back in 1798, when Malthus penned his classic An Essay on the Principle of Population, barely a billion Homo sapiens roamed the planet. Today, Earth's population teeters on the brink of a new milestone: 6.5 billion living, breathing humans.
Check out the population clock herw.
And what are you doing to help push us over the edge?