World News

Just How Much Pee Is In That Pool?

Scientists have now identified an easy way to measure pool urine—by looking for traces of a common artificial sweetener. Urine in pools mixed with chemicals can pose a potential health threat.

For Barcelona, Tourism Boom Comes At High Cost

Many complain their magnificent city is being ruined by tourism. Some 30 million visitors arrive every year, bringing much-needed revenue — but crowding out longtime residents and businesses.