the subject of her latest book isler love ofnator chimpanzees. >> she has been called the woman who redefined man as we think about chim mpanzees. >> i realized like us, they have a dark side. they are capable of violence, brutality and a kind of primitive law. >> i spoke to the steadfast scientist about changing technology? >> gis, gps, satellite imagery, mapping. >> experiments on animals, animal enclose user? >> susan, zoos. a bit about her ally days. >> i fell in love with tarzan and married the wrong jane. >> a new book about plants. can you draw the line for us between plants and chimpanzees? >> without plants, none of us would be here, chimpanzees, people or anything else. everything lives on plant food or lives on creatures that live on plant food. like honestly the plants put little roots into my brain and said, jane, you spent all your life helping animals: it's our turn now. so the book took its own life. you talk about the love affair between humans and plants. where did your love affair with plants begin? >> it began when i was a little girl growing up in my garden in england. i