On an otherwise reasonable evening in July, more than 1,000 people packed an auditorium in Boulder, Colorado, for the culmination of the 2014 Unreasonable Institute. They came to watch 11 ventures present their solutions to some of the world’s greatest challenges.

Watch Unreasonable Institute fellow Divya Yachamaneni, deputy general manager of Naandi Community Water Services, explain how her company is bringing clean drinking water to rural Indian families for less than $2 per month. NCWS’s low-cost water-purification stations are now in more than 400 villages, delivering clean, safe water to about 600,000 people.

Unreasonable Institute

Author Unreasonable Institute

The Unreasonable Institute arms entrepreneurs creating solutions to the world’s biggest social and environmental problems with the mentorship, capital, and networks they need to do so.

More by Unreasonable Institute