7 Billionth Child

At a crowded public hospital, Seun Dupe's twin boys squirm underneath a bundled-up mosquito net as they share the same bassinet. Already they are part of the swelling tide of history, as the U.N. on Monday marked the world population reaching seven billion amid fears of how the planet will cope.

At a crowded public hospital, Seun Dupe's twin boys squirm underneath a bundled-up mosquito net as they share the same bassinet. Already they are part of the swelling tide of history, as the U.N. on Monday marked the world population reaching seven billion amid fears of how the planet will cope.