(CNN) — It started with spots dappled across people’s chests and backs. Unusual hard patches on the skin of their palms and soles of their feet. For some, a blackening of their toes. (CNN) — It ...

Scientists have long known that arsenic in drinking water is a health threat, but its affects on the brain were less clear. A new study using fruit flies revealed that arsenic exposure can lead to ...

It started with spots dappled across people’s chests and backs. Unusual hard patches on the skin of their palms and soles of their feet. For some, a blackening of their toes. Doctors and researchers ...