Bjørn Lomborg is President of the Copenhagen Consensus and Visiting Fellow at Stanford University’s Hoover Institution. His new book Best Things First brings together 12 new, peer-reviewed studies which highlight how to make the world a better place, in the best [and most cost-effective] way. These studies show that by spending $35 billion a year (the same as the increase in annual global cosmetics spend in the last 2 years), on 12 specific policies, we could save 4.2 million lives a year, and generate over $1.1 trillion in new wealth. For every dollar spent, these policies generate $52 in global benefits. In this interview, I speak to Bjørn Lomborg, President of the Copenhagen Consensus. We discuss the 12 most impactful solutions to some of our world’s most pressing challenges – saving millions of lives, generating trillions in economic gains, and huge returns in the process.