There is no longer any doubt: we are entering a mass extinction that threatens humanity’s existence.
That’s the conclusion of a new study by a group of scientists including Paul Ehrlich, the Bing Professor of Population Studies in biology and a senior fellow at the Stanford Woods Institute for the Environment. Ehrlich and his co-authors call for fast action to conserve threatened species, populations and habitat, but warn that the window of opportunity is rapidly closing.
Image: http://www.kurzweilai.net