Effective Altruism: An Introduction is a collection of ten top episodes of The 80,000 Hours Podcast specifically selected to help listeners quickly get up to speed on the school of thought known as effective altruism. Here the host of the show — Rob Wiblin — briefly explains what effective...

Both the Green Revolution and the contraceptive pill are widely recognised as scientific breakthroughs that transformed the world. But few know that those breakthroughs only happened when they did because of a philanthropist willing to take a risky bet on a new idea.