Backers of the new Open Source Seed Initiative will pass out 29 new varieties of 14 different crops, including broccoli, carrots and kale, on Thursday. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

Dairy cows feed through a fence at an Idaho farm, in this 2009 file photo. Idaho's Gov. C.L. "Butch" Otter enacted a bill Friday that criminalizes the act of secretly filming animal abuse at farms. Charlie Litchfield/AP hide caption

itoggle caption Charlie Litchfield/AP

Benny Bunting, a farm advocate for Rural Advancement Foundation International-USA, in front of one of his old chicken houses in Oak City, N.C. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

Economists say small-business owners — especially farmers dealing in high volume and low profit margins — are more likely to accept a volatile currency like Bitcoin than bigger businesses. Allen Sheffield/Flickr hide caption

itoggle caption Allen Sheffield/Flickr

At Happy Boy Farms near Santa Cruz, Calif., Early Girl tomatoes are grown using dry-farming methods. The tomatoes have become increasingly popular with chefs and wholesalers. Courtesy Jen Lynne/Happy Boy Farms hide caption

itoggle caption Courtesy Jen Lynne/Happy Boy Farms

An irrigation pivot waters a corn field in Nebraska. Many farmers in Nebraska and Kansas rely on irrigation to water their corn fields. But the underground aquifer they draw from will run dry. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

Picker Erika Nicolas Garcia, 18, fills her pail at a blueberry farm near Hillsboro, Ore. Anna King/Northwest Public Radio hide caption

itoggle caption Anna King/Northwest Public Radio

Scientists with the U.S. Geological Survey sample water in Goodwater Creek, Mo., for pesticides and other chemicals that may have run off from the surrounding land. Abbie Fentress Swanson/Harvest Public Media hide caption

itoggle caption Abbie Fentress Swanson/Harvest Public Media

Prehistoric "pantries": This illustration is based on archaeological findings in Jordan of structures built to store extra grain some 11,000-12,000 years ago. Illustration by E. Carlson/Courtesy of Dr. Ian Kuijt/University of Notre Dame hide caption

itoggle caption Illustration by E. Carlson/Courtesy of Dr. Ian Kuijt/University of Notre Dame