Cranky Uncle app Name that Fallacy Screen (IMAGE) George Mason University Caption New Cranky Uncle app uses gamification to debunk fake news on climate change. Credit John Cook, Cranky Uncle(tm) app 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.