Number of degrees by which everyone in the world was thought to be separated, according to a famous 1967 study; hence the phrase, "six degrees of separation"
Number of degrees by which everyone in the world is actually separated, according to a new study of 721 million active Facebook users
THE WEEK'S AUDIOPHILE PODCASTS: LISTEN SMARTER
- How Ronald Reagan turned America into a nation of children
- What would a U.S.-Russia war look like?
- Here's the schedule very successful people follow every day
- Why is the West so afraid of Islam?
- The crusade against Iraq War supporters has forgotten someone: Hillary Clinton
- Why Mitt Romney is perfectly poised for a comeback in 2016
- 8 things the world's most extraordinary survivors can teach you about resilience
- This week I learned the moon might be littered with dinosaur fossils, and more
- 8 secrets to steal from power networkers
- 10 things you need to know today: August 1, 2014
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