The ivory trade is an "ecological and moral disaster" that requires businesses and consumers to take up the fight, Hillary Rodham Clinton and Chelsea Clinton argued in a joint op-ed published February 23 in the Financial Times.

Hillary, the former U.S. secretary of state, has been a vocal opponent of the black market trade in wildlife parts, calling for a global strategy to protect wildlife in their environments and dry up demand for trafficked wildlife goods. (Related: "Blood Ivory" in National Geographic magazine.)

"An estimated 35,000 elephants and more than 1,000 rhinos were killed last year alone. At this rate we are on a path towards the extinction of both elephants and rhinos on the African continent," the