UN Climate Change Conference: What the 2°C Goal Means

The goal of COP 21 – the massive UN Climate Change Conference in Paris – is to limit global warming to 2°C (3.6°F) above pre-industrial levels by reducing greenhouse gas emissions around the world. But why, you may wonder, is 2°C the target and what happens if we pass it?  Below is a short video by Climate Central, a non-profit news organization, that addresses these important questions.