Former President Bill Clinton, who has been appointed as the U.N. special envoy for Haiti, is joining an international fund-raising initiative to fight AIDS, tuberculosis and malaria in developing countries through air travel purchases, The New York Times reports. When purchasing airline tickets online, travelers have the option to add a $2 donation to their ticket price.

“If we get broad-based support, there is no telling what we can do,” Clinton said May 20 at a Paris news conference alongside Philippe Douste-Blazy, a development-financing adviser to U.N. secretary general Ban Ki-Moon. “There's no question that large numbers of people will contribute if they know how little it costs and how many lives are saved.”

The campaign is set to begin in January.

“The idea,” Douste-Blazy said, “is that citizens of the world are connected by the Internet and credit cards and can show their solidarity.”