Conserving terrestrial megafauna presents distinct challenges to policymakers. Despite decades of evolving regulatory measures, wild rhinoceros populations are persistently threatened by illegal killing to acquire rhino horn, a valuable commodity in East Asian markets. In Africa, rhino...

The world's five rhinoceros species remain threatened with extinction in the wild despite a 36 year international trade ban on rhino products. Poachers kill rhinos for their horns, which are sought for medicinal and ornamental purposes in Asia and command remarkably high prices on black markets....