31 Kissing Cousins

31 famous people who married their cousins,

A weekly show hosted by John Green, where knowledge junkies get their fix of trivia-tastic information. This week, John looks at some rather famous people who married their cousins including Albert Einstein, Charles Darwin and Queen Victoria.

 

How Big Is Infinity?

It’s time to put on your thinking caps.

Enjoy!

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Using the fundamentals of set theory, explore the mind-bending concept of the “infinity of infinities” — and how it led mathematicians to conclude that math itself contains unanswerable questions.

 

 

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