Orioles rally past Mariners 8-7 for 7th straight victory. Welington Castillo went 4 for 4 with a homer and three RBI, Jonathan Schoop singled in the go-ahead run in the eighth inning and the Baltimore Orioles beat the Seattle Mariners 8-7 on Wednesday for their season-high seventh straight victory.
The number of modern human beings (Homo sapiens) on Earth has been comparatively small until very recently. Just 10,000 years ago there might have been no more than a few million people on the planet. The one billion mark was not passed until the early 1800s; the two billion mark not until the 1920s. As it stands now, though, the world's population is over 7.3 billion.
How Many People Have Ever Lived on Earth? is one of PRB's most popular articles. First published in 1995 and updated in 2002, this latest 2011 article includes data through mid-2011 and a short video explaining the estimate.