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Aluminium cans are seen compressed before recycling in Hong Kong on February 20, 2013. Activists have claimed for years that Hong Kong lags behind the rest of the world on environmental issues ranging from recycling to lanes for cyclists. AFP PHOTO / Philippe Lopez (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)

Aluminium cans are seen compressed before recycling in Hong Kong on February 20, 2013. Activists have claimed for years that Hong Kong lags behind the rest of the world on environmental issues ranging from recycling to lanes for cyclists.  AFP PHOTO / Philippe Lopez        (Photo credit should read PHILIPPE LOPEZ/AFP/Getty Images)