Scientists are confident in their quest to rescue the northern white rhinoceros using 9 northern white rhino embryos, a key step towards pulling the species back from the brink of extinction. A team in Cremona in Italy used eggs harvested from the two surviving females and frozen sperm from deceased males. Science is the only hope for the northern white rhino -- one of two subspecies of white rhino -- after the death of the last male named Sudan in 2018. IMAGES AND SOUNDBITES