There is no doubt that climate change is one of the greatest challenges of our time. In the last 150 years the concentration of greenhouse gases in the atmosphere has skyrocketed, particularly carbon dioxide, methane and nitrous oxide. We know that these gases accelerate climate change because they trap heat in the atmosphere, thus producing an increase in the earth's average temperature. Professor Rubin explains in this article that environmental problems mostly require joint action to find an effective solution. Voluntary technological policy measures will not be sufficient to stabilize greenhouse gas levels. Sufficiently restrictive regulatory policies are also required to limit emissions and promote technological innovation.