The first ever shipment of UK sheep embryos has just arrived in the United States. We ask how significant the trade could be and hear from one of the farmers exporting his flock’s genetics. This week we're talking about salad. The University of Warwick has been awarded £1.4million by the Government to carry out research into the use of robotics in horticulture. Scientists and engineers are working with a large salad grower experimenting with new technology. Presented by Caz Graham and produced by Beatrice Fenton.