Diurnal Illustration (IMAGE) Texas A&M AgriLife Communications Caption This is a diurnal cycle illustration with pineapple. Credit Texas A&M AgriLife Illustration by Gabe Saldana Usage Restrictions Attribution: Texas A&M AgriLife Research 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.