Hanuman Langurs: Monkeys of India / A Helping Hand / Formation Flight The Nature of Things : Season 22 Episode 12

Hanuman Langurs: Monkeys of India: A look at the social organization and adaptation to human settlements of Hanuman langurs, social monkeys who are named for the monkey god Hanuman. A Helping Hand: A look at myoelectric prostheses, artificial limbs which, while being powered by batteries, are actually controlled by amplified muscle electricity. Formation Flight: Examining the reasons why large birds tend to fly in formation.