Cure HIV perhaps or provide clean drinking water to the world.

FORBES: Climate Change: We're Just Not Ready to Deal With it Yet

Among all of China's 660-odd cities, only one small city of 200, 000, Lianyuan in Hunan Province, can claim to provide clean drinking water straight from the tap.

CNN: Economic miracle, environmental disaster

One year later, Jones joined a number of state and private efforts to rebuild Liberia by setting up FACE Africa, a U.S.-based non-profit organization that's working to provide access to clean drinking water in Liberia's rural communities, where running water and sewage infrastructure is often a rare luxury.

CNN: One woman's mission to fix Liberia's water crisis

That could provide a lifetime of clean drinking water to 28, 000 people in developing countries, according to the NGO.

BBC: Canada stops distribution of penny coin