- In this week's New Scientist there is a story about a remarkable anthropologist, currently at Cambridge University, called Barbira Friedman. Her full story is on page 29. She went to stay with the Quecha Lamas in Amazonian Peru when she was a young girl of 22 in 1974. Perhaps because of her youth, she was accepted as one of the clan; she still visits regularly and is now a member of the clan's council of elders. She has fairly recently bought back to Cambridge a plant from their medical lore that helps with toothache. It has successfully passed early phase clinical trials and looks like it could go into production. Ms Freedman is acting as a clan representative to ensure that a decent proportion of the profits are returned to support educational and conservation initiatives. Although she says the clan had been able to 'preserve their dynamic culture and plant knowledge - in a secret, underground way - despite several centuries of contact with the modern world' the knowledge has now died out amongst the younger generation and the educational initiate she has helped start is actually helping the clan to teach and maintain it.