Overpopulation and Species Extinction via Center Biodiversity
The world’s human population doubled from 1 to 2 billion between 1800 and 1930, and then doubled again by 1975. Sometime in 2011, it’s expected to top 7 billion. This staggering increase and the massive consumption it drives are overwhelming the planet’s finite resources. We’ve already witnessed the devastating effects of overpopulation on biodiversity: Species abundant in North America two centuries ago — from the woodland bison of West Virginia and Arizona’s Merriam’s elk to the Rocky Mountain grasshopper and Puerto Rico’s Culebra parrot — have been wiped out by growing human numbers.