- Megafauna Extinction Affects Ecosystems 12,000 Years Later http://www.scientificamerican.com/article.cfm?id=megafauna-extinction-affects-ecosystems-12000-years-later&utm_source=feedburner&utm_medium=feed&utm_campaign=feed%3A+scientificamerican-global+%28content%3A+global%29 9 comments science