Don’t miss our season finale, starring @AmericaFerrera​ and #SigourneyWeaver​, TONIGHT at 10/9c on @NatGeoChannel​! #YEARSproject #AmericaFerrera #natgeochannel #natgeo #seasonfinale #docuseries #climate #climatechange #waroncoal #renewableenergy #china #hongkong #airpollution #coalwars