With fewer than 100 Sumatran rhinos (dicerorhinus sumatrensis) left in the wild, the situation has grown so dire that preventing their extinction might require combining the two populations, and eliminating what little genetic diversity remains between them.

That was the conclusion of a new study by an international team of rhino experts published in the journal Oryx, which proposed that Sumatran rhinos in Borneo and Sumatra be treated as a 'single