Anthropologist Justin Pargeter, Emory University (image) Emory Health Sciences Share Print E-Mail Caption Going small may have helped some humans survive the last period of rapid climate change, 17,000 years ago, says Emory anthropologist Justin Pargeter. Credit Emory University Usage Restrictions Must include photo credit. 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.