The Human Generosity Project examines why and how human cooperation makes its way through different cultures, even those where love supposedly doesn't exist.
Specially trained canines, with their outsized capacity to sniff out even well-hidden people and objects, are helping rangers at several major reserves to do their jobs better.
In a remote village in Kenya, where it is difficult to cultivate crops, women have begun reshaping their fortunes by harvesting aloe plants and turning them into beauty products.