Humans Were Already Recycling 13,000 Years Ago (image) FECYT - Spanish Foundation for Science and Technology Share Print E-Mail Caption This shows Moll's Salt site in Tarragon (Cataluña, Spain). Credit M. Vaquero et al. Usage Restrictions None 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.