Huffington Post: Despite the recent polar vortex and the efforts of some to suggest otherwise, global warming is happening. The National Oceanic and Atmospheric Administration (NOAA) and NASA have both said that the 10 warmest years in history happened since 2000. 97 percent of working climate scientists believe climate change is due to the actions of humans. And the risk to the planet is even greater than some scientists thought. A visualization released Tuesday by NASA's Goddard Institute for Space Studies, which...