Birth rates have dropped faster than life expectancy has increased, causing slower population growth around the world. Forecasts from the United Nations predict that world population will actually ...

New research concludes that humanity would benefit more if it aims for ecological sustainability and stays within the limits of what Earth can provide, rather than pursuing relentless growth. The ...

"We've been tracking children's growth from birth all the way through to adulthood, and the fastest period of growth is clearly the first couple of years during infancy," Sean Cumming, a professor in ...