In a new video from Prager University, Bjorn Lomborg of the Copenhagen Consensus Center explains why green cars aren’t as green as you think.

Watch below.

Here’s more information.

Are electric cars greener than conventional gasoline cars? If so, how much greener? What about the CO2 emissions produced during electric cars’ production? And where does the electricity that powers electric cars come from? Environmental economist Bjorn Lomborg, director of the Copenhagen Consensus Center, examines how environmentally friendly electric cars really are.