It's time environmentalists talked about the population problem

In all the talk of tackling environmental problems such as climate change, the problem of population growth often escapes attention. Politicians don't like talking about it. By and large, neither do environmentalists—but ...

Chinese airline completes cooking oil fuel flight

A Chinese airline on Saturday completed the country's first commercial flight using biofuel, made from waste cooking oil, as the government seeks to promote greater environmental sustainability.

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