Neanderthal peoples' Asian cousins occupied the islands of our nearest neighbours and possibly Australia itself, scientists believe. Writing today in the journal Science, Adelaide University archaeologist Alan Cooper argues that the Denisovans – Neanderthal-like relatives of ancient humans – crossed Wallace’s Line, one of the world’s most formidable marine barriers, more than 100,000 years ago. Having achieved this feat, it would be “amazing” if they had not made what was then an easy crossing to Australia. “If you cross Wallace’s Line you’ve done all the hard work,” Professor Cooper told The Australian. The Denisovans were unknown before a finger bone...