Four Positive Climate Change Developments

It's not surprising that you don't often see the words "climate change" and "optimism" in  the same headline. The world's forests and oceans are still in danger,  extreme weather events are becoming more frequent and severe, and we  aren't on track to achieve the key goal of the 2015 Paris Agreement to  limit global warming to significantly below 2degC by the end, and  ideally 1.5degC by the end.