Since we depend on functioning ecosystems to cleanse our water, enrich our soil, and create the very air we breathe, biodiversity is clearly not something to discard carelessly.
-E.O. Wilson-

In this matter the opinion of biologists and conversationists is virtually unanimous: The only way to save the Creation with existing knowledge is to maintain it in natural ecosystems. Considering how rapidly such habitats are shrinking, even that straightforward solution will be a daunting task. Somehow humanity must find a way to squeeze through the bottleneck without destroying the environments on which the rest of life depends.
-E.O. Wilson-