Odors Simplified (IMAGE) Rockefeller University Caption In the real world, plumes of odor molecules drift randomly in the air, swept to and fro by whatever might be. Scientists now show that the locust brain uses three simple rules (reds, greens and blues) to encode the complex and ever-changing odor signals of these plumes. Credit Rockefeller University 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.