#39: Amazonian Tribe Doesn't Have Words for Numbers
The Pirahã people overturned scientists' belief about human cognition.

#56: Memory Training Can Make You Smarter
Your intelligence isn't just what you're born with. 

#58: Smart People Are Better Able to Keep a Beat
Good neural functioning is good neural functioning.

#72: Prozac Cures Lazy Eye
The antidepressent might be the answer to wiping out amblyopia for good.

#86: You, Too, Have a Photographic Memory
When put to the test, your brain remembers images with astonishing accuracy.