V2 (IMAGE) Arizona State University Caption The viral world constitutes the most abundant life form on earth. The graphic illustrates the staggering amount of genetic material contained in viruses. Credit Shireen Dooling 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.