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Scientific American Frontiers • Season 11 Episode 5
Life's Little Questions IINew Window
Why can't you tickle yourself? Is laughter uniquely human?


 Chapter 1: A Ticklish Question
 Chapter 2: Laughing Matters
 Chapter 3: Cold Comfort

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A Walk to BeautifulA Walk to Beautiful 
A Walk to Beautifulyoutube52:00
A powerful story of healing and hope for women in Ethiopia...
AgingAging 
pbs13:00
Will research into "longevity genes" help us live longer and...
Cancer WarriorCancer Warrior 
pbs52:00
Judah Folkman and other researchers pioneer a novel approach to...
DoctorsDoctors' Diaries 
pbs50:00
Seven doctors, 21 years... Saving lives is only part of the...
Hidden MotivesHidden Motives 
Hidden Motivesyoutube26:00
How does the unconscious mind determine human behavior?
Marathon ChallengeMarathon Challenge 
Marathon Challengeyoutube52:45
Every year thousands of athletes from across the globe flock to...
Personal DNA TestingPersonal DNA Testing 
pbs12:00
Genetic testing to assess risk factors for a handful of serious...
Surgical SlimmersSurgical Slimmers 
Surgical Slimmersyoutube26:00
In spite of the risks, people are lining up to solve their...
The Fluoride DeceptionThe Fluoride Deception 
google28:31
Christopher Bryson, an award-winning journalist and former...
The Future Of FoodThe Future Of Food 
The Future Of Foodhulu1:28:54
The Future Of Food offers an in-depth investigation into the...
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