Breaking Out (image) The Earth Institute at Columbia University Share Print E-Mail Caption A tornado west of Laramie, Wyo., June 15, 2015. It passed over mostly rural areas, lasting some 20 minutes. Credit John Allen/International Research Institute for Climate and Society Usage Restrictions Credit must be given. Share Print E-Mail 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.