Earth’s population is expected to reach almost 10 billion people by 2050 but it is unclear how many the Earth can comfortably accomodate. Resources are limited, especially in poorer countries where family planning services are less available.
The WorldWatch Institute tracks global environmental trends. Their publications are translated into two dozen languages and have influenced environmentalists and policymakers around the world. Reporter Alex Van Oss profiled Lester Brown, a farmer turned statistician, who founded and now directs the Institute.