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4:37

Gordon Hamilton

Can you solve the Mondrian squares riddle?

Posted Jun 2018
3:49

Daniel Finkel

Can you solve the time travel riddle?

Posted Dec 2018
2:55

Alex Gendler

Can you solve the giant iron riddle?

Posted Nov 2018
6:24

Arthur Benjamin

The magic of Fibonacci numbers

Posted Nov 2013
4:32

Daniel Finkel

Can you solve the alien probe riddle?

Posted Sep 2018
5:11

Rob Reid

The $8 billion iPod

Posted Mar 2012
13:58

Harry Baker

A love poem for lonely prime numbers

Posted Mar 2015
3:21

Jeff Dekofsky

Euclid's puzzling parallel postulate

Posted Mar 2013
3:24

Daniel Finkel

Can you solve the unstoppable blob riddle?

Posted Mar 2019
8:58

Reuben Margolin

Sculpting waves in wood and time

Posted May 2012
4:53

Seena Mathew

How fast is the speed of thought?

Posted Nov 2020
7:01

Dennis Wildfogel

How big is infinity?

Posted Jul 2012
3:30

Reynaldo Lopes

The infinite life of pi

Posted Jul 2013
4:40

Alex Gendler

Can you solve the three gods riddle?

Posted Feb 2017
4:26

Alex Gendler

Can you solve the multiplying rabbits riddle?

Posted Jan 2019
5:46

Jeff Dekofsky

The Infinite Hotel Paradox

Posted Jan 2014
7:38

Dan Cobley

What physics taught me about marketing

Posted Aug 2010
4:03

Dennis Shasha

Can you solve the temple riddle?

Posted Feb 2016
3:32

Daniel Finkel

Can you solve the vampire hunter riddle?

Posted Jan 2019
22:52

Emily Levine

A theory of everything

Posted Apr 2009
3:48

Ganesh Pai

Can you solve the passcode riddle?

Posted Jul 2016
10:14

Amara Berry

The case for reforming STEM education

Posted Nov 2017
3:40

Dennis Shasha

Can you solve the control room riddle?

Posted Jun 2016
3:27

Yannay Khaikin

How many ways can you arrange a deck of cards?

Posted Mar 2014
4:19

Dennis Shasha

Can you solve the stolen rubies riddle?

Posted Oct 2018
3:00

Daniel Finkel

Can you solve the troll's paradox riddle?

Posted Dec 2018
18:04

Mathieu Lehanneur

Science-inspired design

Posted Nov 2009
7:09

David Merrill

Toy tiles that talk to each other

Posted Feb 2009
3:50

David Hoffman

Sputnik mania

Posted Apr 2008
11:28

Mathieu Lamiaux

Imagining a new future for health systems in Africa

Posted Sep 2015
4:20

JayaShri Maathaa

A magical mantra for nurturing a blissful life

Posted Nov 2020
10:47

Wanjira Mathai

3 ways to uproot a culture of corruption

Posted Feb 2020
3:43

Christopher Danielson

One is one... or is it?

Posted May 2012
6:12

Angela Lee Duckworth

Grit: The power of passion and perseverance

Posted May 2013
12:49

Alan Smith

Why you should love statistics

Posted Jan 2017
13:18

Cathy O'Neil

The era of blind faith in big data must end

Posted Aug 2017