'700,000-Year-Old Horse Found in Yukon Permafrost Yields Oldest DNA Ever Decoded' http://t.co/H1At83Znt4 November 24, 2013 · aside , tweet “700,000-Year-Old Horse Found in Yukon Permafrost Yields Oldest DNA Ever Decoded” http://t.co/H1At83Znt4 Tags: #Tweet