Dispersion Cartoon (IMAGE) Penn State Caption This graphic shows that time increases the diffusion of gas molecules into shale oil. Penn State researchers say increasing the time gas molecules come in contact with shale oil would greatly increase oil yields in unconventional oil extraction in shale regions. Credit Michael Cronin, Penn State Usage Restrictions Non commercial use only 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.