Sun-Powered Irrigation

By Jack Keller, P.E., Paul Polak, Paul Storaci, and Robert Yoder A note from Paul Polak: This is the last paper my dear friend and soul brother, Jack Keller, wrote, He died recently at the age of 85 at an IDE social gathering, in the middle of an animated discussion on politics, He put down… Read More »

Clean Water for India

Spring Health, our rapidly scalable safe drinking water company designed to go global, has now started its commercial rollout in India by recruiting and training 90 new full-time staff, and expanding from 35 villages to 105 villages in three months. As the months go by, we have learned more and more about the fundamental importance… Read More »

The Last 500 Feet

Developing practical and profitable new ways to cross the last 500 feet to the remote rural places where poor families now live and work is the first step towards creating vibrant new markets that serve poor customers. Fortunately, it’s not that difficult to transport 100 kitchen drip kits from Kathmandu to Pokhara on the roof… Read More »

Big Dams or Sprinkling Cans?

By Paul Polak Everybody in the world knows about big dams. They do irreparable damage to the environment and the  millions of people they displace, but we need to keep building a few of them to feed the nine billion people we expect will live on planet earth when its population stabilizes. Ten years ago, ten world… Read More »

Death of Appropriate Technology II : How to Design for the Market

by Paul Polak The single biggest reason that the appropriate technology movement died and most technologies for developing countries never reach scale is that nobody seems to know how to design for the market. Over the past 30 years, I’ve looked at hundreds of technologies for developing countries. Some provided elegant solutions for challenging technical… Read More »

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