Conservationists working to save the Sumatran rhino—one of the world’s most imperiled mammals—heard good news this week as WWF-Indonesia has found evidence of at least one Sumatran rhino persisting in the Indonesian state of Kalimantan, located on the island of Borneo. Small populations of Sumatran rhinos (Dicerorhinus sumatrensis) survive on Sumatra and on Borneo (in […]