For 10 points, name this valuable material sought by elephant poachers.
This commodity is the subject of the report "The Illusion of Control," which notes how Elizabeth Quat called for legislation to regulate it. A "room" named for this good is depicted in the film The End of the Wild, in which the basketball player Yao Ming argues that both its legal and illegal sale are harmful. In June 2016, officials seized a Malaysia-bound plane that contained sponge-wrapped pouches of this good in the South Sudan airport. A documentary about this good's (*) "Last Days" was made by Kathryn Bigelow and argues that the Al Shabaab's terrorism is financed by its illegal sale. China announced that it would phase out and ban this commodity by the end of 2017, and Uhuru Kenyatta ordered that 172 million dollars' worth of this commodity was set on fire in Nairobi National Park alongside the similarly-valuable rhinoceros horn. For 10 points, name this valuable material sought by elephant poachers.
This commodity is the subject of the report "The Illusion of Control," which notes how Elizabeth Quat called for legislation to regulate it.
ivory