A book published by climate change deniers in 2015 and distributed nationwide to college and high school teachers states, “ Claims of a ‘scientific consensus’’ on climate change “rest on two college student papers. The writings of wacky Australian blogger and a non-peer reviewed essay by a socialist historian.” The blatant and purposeful lie is easily circulated to thousands, perhaps millions, across cyberspace. Many will try and probe the statements and in turn learn a few facts, verified and reviewed by genuine experts in the field. An alarming number won’t. On the eve of the Climate March in Washington and many other cities in the US, let’s look at a few of the facts around the most pressing issue that the world faces barring a nuclear war.