Richard G. Klein, Nicholas Wade and Spencer Wells, among others, have postulated that modern humans did not leave Africa and successfully colonize the rest of the world until as recently as 60,000 - 50,000 years B.P., pushing back the dates for subsequent population splits as well.
Spencer Tracy | Wells Fargo | H. G. Wells | Marks & Spencer | Spencer | Junior Wells | Indian Wells | Sadler's Wells | Mary Wells | Herbert Spencer | Bishop of Bath and Wells | Wedding of Charles, Prince of Wales, and Lady Diana Spencer | Spencer Gulf | Jimmy Spencer | Wells, Somerset | Wells Fargo Center | Spencer W. Kimball | Spencer Wells | Sadler's Wells Theatre | Bud Spencer | Baldwin Spencer | Wells | Kitty Wells | Jonathan Wells | Wells Fargo Center (Philadelphia) | Wells Cathedral | Spencer Williams | Spencer P. Jones | Spencer Abraham | Jon Spencer Blues Explosion |
Preliminary results from a study by Pierre Zalloua of the American University of Beirut and Spencer Wells were published in the October 2004 issue of National Geographic.
; and bio-social-evolutionist dynamics of Jared Diamond, Spencer Wells, Howard Bloom, Elisabet Sahtouris and Barbara Marx Hubbard.
Another study carried out by geneticists Spencer Wells and Pierre Zalloua of the American University of Beirut showed that more than 50% of Y-chromosomes from Maltese men could have Phoenician origins.