Affluence is killing the planet, warn scientists

Would you like to be rich? Chances are your answer is: "Yes! Who wouldn't want to be rich?" Clearly, in societies where money can buy almost everything, being rich is generally perceived as something good. It implies more ...

Slow down: Reduced speed limits save lives in busy cities

Traffic accidents are the leading cause of non-natural deaths worldwide. Lower speed limits may help prevent accidents. But speed-reduction policies can be controversial and effects are not well documented.

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