Is man-made climate change our biggest problem? Are the wildfires, droughts and hurricanes we see on the news an omen of even worse things to come? The United Nations and many political leaders think so and want to spend trillions of tax dollars to reverse the warming trend. Are they right? Will the enormous cost justify the gain? Economist Bjorn Lomborg, director of the Copenhagen Consensus Center, explains the key issues and reaches some sobering conclusions.

Here is a longer talk about “Prioritizing the World: How to spend $75 billion to do the Most Good”

Dr. Bjorn Lomborg is an academic and the author of the best-selling “The Skeptical Environmentalist” and “Cool It”. He challenges mainstream concerns about the environment and points out that we need to focus attention on the smartest solutions first. He is an adjunct professor at the Copenhagen Business School, and director of the Copenhagen Consensus Center, which brings together many of the world’s top economists, including seven Nobel Laureates, to set priorities for the world.