23. One Chance — Scientists no longer have to use bold predictions about the future consequences of global warming to scare us. The future is here. Over a third of the arctic sea ice has melted in the last 130 years. This has shrunk habitat, flooded low lying areas and accelerated climate change, which has increased the frequency of catastrophic weather events. Pine beetle infestations enabled by a lack of severe winters are ravaging the pine forests of North America. This has disrupted the lumber industry, created fire hazards and deprived the endangered Grizzly Bears of their primary fall food. Saving acres of rainforests is one of the most effective ways to slow global warming, but we are running out of time. We have one chance and it’s now.