President Donald Trump referred to climate change during his Tuesday address to the United Nations General Assembly as "the biggest con job in the world". Scientists claim climate change is real and largely caused by humans. Trump spent several minutes discussing climate change in his speech to the United Nations General Assembly. He criticized the European Union for its reduced carbon footprint and warned countries who have heavily invested in renewable energy of the consequences. His remarks come just a day after UN Secretary-General Antonio Guterres hosts at the UN a climate summit that will be focusing on new countries' climate action plans.