In the U.S., 30 to 40 percent of food is wasted. California aims to change that

In the U.S., 30 to 40 percent of food produced never makes it to a dining table. Much of that waste ends up in landfills. But some companies are pursuing new techniques to reduce and redistribute surplus -- plus process discarded food in environmentally friendly, sustainable ways that will reduce greenhouse gas emissions. NPR’s Allison Aubrey reports from California, which is leading the charge.

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