The FarmWise agricultural robot moves along a bed of sprouting romaine lettuce, weeding as it goes, at a farm in Salinas, California on February 20, 2020. (Photo by Philip Pacheco / AFP) (Photo by PHILIP PACHECO/AFP via Getty Images) The coronavirus pandemic has brought hard times for many farmers and has imperiled food security for many millions both in the cities and the countryside.United Nations experts are holding an online conference beginning Tuesday to brainstorm ways to help alleviate hunger and prevent the problems from worsening in the Asia-Pacific region — a challenge made doubly difficult by the loss of many millions of jobs due to the crisis.The U.N.