Last call to save the rhinos.

The family Rhinocerotidae with many species spread around the world was a distinct feature of the global Pleistocene fauna, but most of these species are now extinct. Three of the five surviving species are critically endangered, due to habitat loss and a surge in criminal hunting for horns. To save these iconic species, conservation science will have to apply all methods at its disposal, from population management through to advanced genomics and forensics. Michael Gross reports.