World Health Organization
For years, the Brazilian city has surpassed international limits for a dangerous air pollutant.
Activists are petitioning against the approach, calling it a "highly regressive step.”
Researchers find 'no conclusive evidence' that coffee causes cancer but suggests very hot coffee can.
Women wanting to get pregnant should wait for six months if their male partner had symptoms of the virus.
WHAT'S HAPPENING
The doctors, professors and scientists fear the Games will help Zika spread around the globe.
Over 60 percent of those attacks were deemed intentional.
Dirty air kills some 3 million people worldwide each year.
Improving mental health resources could go a long way toward improving the global economy.
We're constantly playing infectious disease catch-up.
More than 11,300 people have died over the past two years in the world's worst Ebola epidemic, nearly all of them in Guinea, Liberia and Sierra Leone.