Air pollution in Asia, which has claimed at least 800,000 lives every year.
The rare event caused the press to raise a lengthy debate among bioethics.
Unconditional eating habits cause more than 400,000 deaths a year in the United States due to cardiovascular disease and related diseases.
A recent study showed that people who ate nuts every day were less likely to die than 20% compared to those who never ate.
The training program, initiated at the University of Sydney, Australia, aims to reduce the smoking rate among Aboriginal communities, and has trained 1,000 native health workers.