As I watched “the most important meeting in human history” last week, I decided that the COP15* would be a good topic for The Best of 2009 Blog Challenge. More specifically, seeing this chart (below) about global warming triggered an “aha! moment” for me. Over the past couple of years, the majority of scientists have come to a consensus on realistic numbers indicating the human impact on climate change. Here is my brief attempt to make sense of what’s going on and what we can do about it.