Late at night in his dorm room, Huyen Hoang was about to fall asleep when he could not shake off what he saw — a photo of a rhinoceros dead and dehorned in Vietnam.
It was 2011 when Hoang, a Vietnamese American, first learned about rhino horn poaching. That same year, the Javan rhino was deemed extinct in his home country, and rhinos elsewhere were being hunted at record pace.
