SYDNEY, Australia, Oct. 22 (TNSjou) -- The University of New South Wales issued the following news: * * * Not hunters but collectors: the bone that challenges the 'humans wiped out Australian megafauna' theory New technology has shown the incision marks likely made by humans on the fossilised bone of an ancient kangaroo were in fact made after the bone was fossilised, not while the animal was alive. By Lachlan Gilbert New research led by UNSW Sydney palaeontologists challenges the idea that more PR