"I’ve always thought that the respect that Barack Obama gets from people in this country and around the world is something that just eats Trump alive inside.”
former director of public affairs
Biden says climate change is “indisputable” and “the greatest threat to our security,” calling for a “revolution” to address it. He has released a national plan to reduce emissions and invest in new technology and infrastructure. As a senator, he expressed alarm over greenhouse gases, but also supported controversial energy sources such as fracking and so-called clean coal.