As species are exterminated by shifting climate zones, ecosystems can collapse, destroying more species. — James Hansen Copy Share Image
If we and the rest of the back-boned animals were to disappear overnight, the rest of the world would get on pretty… — David Attenborough Copy Share Image
If enough species are extinguished, will the ecosystems collapse, and will the extinction of most other species follow soon afterward? The only… — E. O. Wilson Copy Share Image
