It's an unfortunate backslide after years of improvement.
It's Mexico City's first pollution alert in 11 years.
There can come a time when strong measures are needed to ease the effects of too many cars on city street. Today, that time came to Paris. And then it passed.
In Saudi Arabia, where only men can earn a driver's license, a conservative cleric is drawing criticism for saying that women risk damaging their ovaries and bearing children with clinical problems if they drive, The Guardian reports.
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