Bill Gates describes the successful work of 2 million volunteers and millions of children and parents in India's poorest rural areas to get all the children in India vaccinated for polio. This includes the work of the Bill and Melinda Gates foundation. He decribes his visits to India and realizing over time how bringing vaccinations, healthcare, improvement in agricultural development would enable hundreds of millions of India's children to participate and contribute to bringing out India's full potential. Harnessing their full potential is the next big challenge in India's development and modernization.