Comp_final (IMAGE) European Molecular Biology Laboratory Caption An illustration uses a variety of colours to signify the original diversity in fly, mosquito, and butterfly populations in the upper left area. A chemical effect alters the populations, not only decreasing the overall number of insects but also affecting their diversity Credit Isabel Calvo/EMBL Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.