The following question and answer session was excerpted from a podcast featuring water expert Seth Siegel, author of the New York Times bestseller Let There Be Water, interviewing Naty Barak, chief sustainability officer at Netafim, the Israeli company that in the 1950s invented drip irrigation, the most efficient use of water in agriculture, with the dripping of droplets of water at the roots of plants during regular intervals. Barak grew up in an Israeli city, but wanted to be a farmer. In time, he left the fields to become a senior executive at Netafim. Siegel and Barak discuss what its use means for solving some of the world’s most vexing problems.