mankind, and he was trying to engage as large an audience as possible, it's up to mankind to tackle the problem of global warming and to emerge out of adolescence, as he put it, and take the action necessary to reduce c02 take the action necessary to reduce co2 emissions. it was like an archaeology, a biology lesson to start with, talking about the fossil evidence that showed mammalian species tend to be around for a million years before becoming extinct or evolved into something else. he said humanity has only been here for 200,000 years, and he equated that to the human life span, about 80 years. he said, it means we are essentially just coming out of adolescence, sweet 16, as he put it, emerging into adult hood. that was his overriding theme, that we are adults, we are grown up, and no one else is going to clean up the mess in the world caused by man other than ourselves. this was an appeal