Health-care providers in low- and middle-income countries are having to adapt to deal with the growing problem of non-communicable disease.
Mounting evidence suggests even the tiniest amounts of arsenic can boost your risk of developing cancer. But some scientists think that evidence is overblown. This article takes a close look at the controversy.
Brick making supplies jobs and pollutes the air in the world’s poorest economies.
For centuries miners have used mercury to trap particles of precious metals. Artisanal and small-scale gold miners used an estimated 1,400 metric tons of mercury in 2011. About one-third of the mercury used is believed to go into the air while the rest goes into soils and waterways.