Thank you for your replies and additional information.
Here is another interesting website on this topic
In the summer of 1960, 26-year-old Jane Goodall arrived on the shore of Lake Tanganyika in East Africa to study the area's chimpanzee population.
Although it was unheard of for a woman to venture into the wilds of the African forest, the trip meant the fulfillment of Jane Goodall's childhood dream. Jane’s work in Tanzania would prove more successful than anyone had imagined...
...Today, Jane spends much of her time lecturing, sharing her message of hope for the future and encouraging young people to make a difference in their world.