Farm Zero is a five-year-old startup company that's a concept for sustainable agricultural systems that use sea water rather than fresh water as the core for growing fruits and vegetables. This concept could someday be a life-saver in places dealing with water scarcity and other resource poverty. This week we talk to the founder of Farm Zero, Mike Fawcett, as he tells us about the company's technology and efforts in places like Oman and Grenada. Then we hear from writer Lauren Markham about the new generation of American hipster farmers, or farmsters. Produced by Alex Wise.