This discussion reviews the state of the world's population, its changes, and its implications for world health in the 21 st century. My argument is that much of the future is already here in terms of ...

Back in the 1990s, it seemed everyone had to have a vision for 2020. Like so many things, the 20/20 vogue came from the United States, based on how visual acuity is measured at 20 feet. Importantly, ...

NOTICE: The project that is the subject of this report was approved by the Institute of Medicine's Council. This report has been reviewed by a group other than the authors according to procedures ...