TED Talks Education
TED
Add to My Podcasts
Episodes
About
Reviews
Charts
Promote
Why is 'x' the unknown? | Terry Moore
3 minutes
Posted Jun 6, 2012 at 3:00 pm.
0:00
3:36
Add to My Queue
Download
MP3
Share
episode
Share at current time
Show notes
Why is 'x' the symbol for an unknown? In this short and funny talk, Terry Moore gives the surprising answer.
Watch Video
Previous
What's left to explore? | Nathan Wolfe
Next
Archaeology from space | Sarah Parcak
← See all 137 episodes of TED Talks Education