But why do chimps still emit all that CO2, water vapor, and methane?

"Sage" Dr Jane Goodall chimps in with advice | Herald Sun

She tells how a chimp sources its food in a sustainable way - as compared to a baboon, which will snatch at a tree and discard any unripe fruit after a single bite.

"The chimpanzee will feel it, or squeeze it, or sometimes gently bite it, while leaving it on the branch, and they can come back to it tomorrow. They have the beginning of understanding that they should conserve."
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"Heads of corporations seem to be schizophrenic -- on the one hand they are making a decision based on the bottom line . . . and on the other hand they go home and they seem to be loving parents or grandparents."

Dr Goodall, who has set up a youth program called Roots and Shoots, is hopeful future generations will focus on climate change, animal welfare and environmental conservation, rather than financial gain.