Dr. Jane Goodall is known the world over as an ambassador for the natural world, and the foremost expert on chimpanzees after 60 years of studying wild chimpanzees' social and family interactions. Goodall first visited Tanzania to observe its chimpanzees in 1960.

She is the founder of the Jane Goodall Institute and the Roots & Shoots program and has worked extensively on conservation and animal welfare issues. In April 2002, she was named a United Nations Messenger of Peace. Goodall is an honorary member of the World Future Council and today is her 90th birthday.

I went into the vast audio archives and pulled up my conversation with Dr. Jane from a few years ago. Her messages are more relevant than ever.