Scientists discover how air pollution triggers lung cancer

Scientists said Saturday they had identified the mechanism through which air pollution triggers lung cancer in non-smokers, a discovery one expert hailed as "an important step for science—and for society".

Sweeteners may be linked to heart disease risk, study suggests

A large study suggested Thursday that artificial sweetener could be associated with a higher risk of heart disease, however experts urged caution about the findings.

Immune cells engineered to battle cancer can be turned 'on' or 'off'

The billions of immune cells that help protect us from diseases do amazing things, but sometimes they need a little boost. For decades, scientists have been trying to figure out ways to engineer living immune cells to better combat aggressive diseases, like cancer.