The Local Spain https://feeds.thelocal.com/ Read the latest news and views from Spain in English en-us news@thelocal.com (TheLocal) webmaster@thelocal.com (TheLocal) TheLocal RSS Feed Prehistoric humans were earliest polluters, Gibraltar cave study finds The oldest signs of heavy metal pollution caused by human activity, dating from the early Stone Age, have been found in caves in Spain and Gibraltar, officials said on Monday. https://www.thelocal.es/20150922/oldest-traces-of-heavy-metal-pollution-caused-by-humans-uncovered Tue, 22 Sep 2015 11:07:25 +0200 oldest-traces-of-heavy-metal-pollution-caused-by-humans-uncovered