Climate Change Survival Guide: How Did We Get to This Point?

In the first part of NBCLX Storyteller Chase Cain's climate change survival guide, he explains the basics of why the planet is warming and what needs to change to protect its future. Scientists agree that the safe limit of warming is only 2.7 degrees Fahrenheit, and we've already hit 2.2 degrees. What's more, we're headed toward warming of 5 degrees, and the results could be "apocalyptic," Cain says.