By Ashik Siddique | May 06, 2013 11:58 PM EDT
New analysis suggests that Australian megafauna were wiped out by climate change in the late Pleistocene era; Aboriginal human activity was not the primary cause of the massive animal extinction.
By Makini Brice | Nov 08, 2012 12:53 PM EST
Recent study has found that the Arabica coffee bean may go extinct by the end of the century.
