Spotted: An yi kiyasin cewa ana aika tan miliyan 6 na wuraren kofi zuwa wuraren da ake zubar da kasa a kowace shekara, inda suke samar da methane - iskar gas mai gurbata yanayi da ke da tasiri ga dumamar yanayi fiye da carbon dioxide.
Yanzu, wani kamfanin fasaha daga Warsaw, EcoBean, ya ƙirƙiri filin kofi da aka kashe ...