“Global warming, along with the cutting and burning of forests and other critical habitats, is causing the loss of living species at a level comparable to the extinction event that wiped out the dinosaurs 65 million years ago. That event was believed to have been caused by a giant asteroid. This time it is not an asteroid colliding with the Earth and wreaking havoc: it is us.”

“If human is capable of conducting genocide,no need for an asteroid to wipe out dinosaurs.”

“Of the four billion life forms which have existed on this planet, three billion, nine hundred and sixty million are now extinct. We don't know why. Some by wanton extinction, some through natural catastrophe, some destroyed by meteorites and asteroids. In the light of these mass extinctions it really does seem unreasonable to suppose that Homo sapiens should be exempt. Our species will have been one of the shortest-lived of all, a mere blink, you may say, in the eye of time.”

“todays the first anniversary of the asteroid hitting the moon. A year ago i was sixteen years old, a sophomore in high school.”

“Extinction, the irrevocable loss of a species, causes pain that can never find relief. It is an ache that will pass from generation to generation for the rest of human history.”

“After once having made the mistake of watching television news, I had worried for a while about an asteroid hitting the earth and wiping out human civilization. The anchorwoman had said it was not merely possible but probable. At the end of the report, she smiled.”