Tuning Forks (IMAGE) San Francisco State University Caption To artificially pollinate some of the tomato plants floral clusters, researchers used tuning forks to reproduce the frequency at which bees buzz, releasing pollen. Credit Drew Potter Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.