Effective altruism in a nutshell

'Effective Altruism: An Introduction' is a collection of ten top episodes of The 80,000 Hours Podcast (80000hours.org/podcast/?utm_campaign=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 altruism is all about, and what to expect from the rest of this series.