The demographers, working with the University of Bristol and Wellcome Trust, say the maps will provide detailed pictures of humanity by 2100 ... estimate population sizes across the world down ...

It’s population dynamics,” Sciubba told me. According to one estimate, carbon emissions would be more than 40 percent lower by 2100 if the world’s population fell to 7 billion than if it ...

As the theme of this year’s World Population Day reminds us ... and 10.9 billion in 2100. This dramatic growth has been driven largely by increasing numbers of people surviving to reproductive ...