I liked this passage because I think the author did a good job of remaining unbiased. He wasn't saying that humans were the main cause of global warming and that we are destroying the planet but he also wasn't saying that it wasn't happening. He said that instead of continuing to research and spend time on trying to figure out whether its actually happening or not, we should take precautions regardless. I think this is a good point because if we take precautions we have nothing to lose. It would only be benefiting us and our planet for years to come.