Mental Floss: Big Questions - TV Episode Calendar

2x1
Where did we get the name America?
Episode overview

Welcome to season two! This week, Fred T. asks, "Where did we get the name America?"

2x2
Why do we cry?
Episode overview

This week, Briana Stanhope. asks, "Why do people cry?"

2x3
Why do my joints hurt more when it rains?
Episode overview

This week, starlinguk asks, "I have arthritis, why do my joints hurt more when it rains?"

2x4
Are there good viruses?
Episode overview

This week, acalibaby808 asks, "Are there good viruses?"

2x5
Why does my hair feel dry from chlorine?
Episode overview

This week, capselo asks, "Why does my hair feel dry after swimming in chlorinated water?"

2x6
Why are blueprints blue?
Episode overview

This week, David Lev asks, "Why are blueprints blue?"

2x7
Why is my voice different when I hear a recording?
Episode overview

This week, Kristina Bailey asks, "Why does our voice sound different when we hear an audio or video recording of it?"

2x8
Why is there a joker in playing card decks?
Episode overview

This week, Margaret asks, "Why is there a joker in playing card decks?"

2x9
Why does daylight saving time vary by country?
Episode overview

This week, Jerome asks, "Why does daylight saving time vary by country?"

2x10
What causes motion sickness?
Episode overview

This week, Craig asks, "What causes motion sickness?"

2x11
Why do babies' eyes change color?
Episode overview

This week, doxysrkx asks, "Why are babies born with blue eyes?"

2x12
What's the difference between American and Canadian Thanksgiving?
Episode overview

This week, Keegan T. asks, "What's the difference between American and Canadian Thanksgiving?"

2x13
How did eating popcorn become a custom at movie theaters?
Episode overview

This week, Bradley Stein asks, "How did eating popcorn become a custom at movie theaters?"

2x14
Does cracking your knuckles cause arthritis?
Episode overview

This week, seanjedi97 asks, "Does popping your knuckles really cause arthritis?"

2x15
Why do we get songs stuck in our heads?
Episode overview

This week, Tobias Anderson asks, "Why do we get songs stuck in our heads?"

2x16
Why does sudden exposure to the sun cause sneezing?
Episode overview

This week, ReiAyanami8 asks, "Why does sudden exposure to sunlight cause some people to sneeze?"

2x17
Why do people have birthmarks?
Episode overview

This week, Creddie Ramos asks, "Why do people have birthmarks?"

2x18
What makes hair naturally straight or curly?
Episode overview

This week, clairebellxo asks, "What makes hair naturally straight or curly?"

2x19
Where did emojis come from?
Episode overview

This week, Emily asks, "Where did emojis come from?"

2x20
Why do some countries drive on the left and some on the right?
Episode overview

This week, mgnm257 asks, "How did it end up that some countries' citizens drive on the left side of the road and others drive on the right?"

2x21
What's a brain freeze?
Episode overview

This week, Peggy asks, "What's a brain freeze?"

2x22
What's the origin of fireworks?
Episode overview

This week, Lindsay asks, "What's the origin of fireworks?"

2x23
Why are there 24 hours in a day?
Episode overview

This week, FreedomFanBoy asks, "Why are there 24 hours? Why not 25? or 100?"

2x24
Why do traffic jams occur?
Episode overview

This week, Colleen Jousma asks, "Why do traffic jams occur? Is it only because there are too many cars on the road or is there something more to it?"

2x25
How does ghost hunting technology work?
Episode overview

This week, Tim asks, "What's the evidence that ghost hunters use and look for?"

2x26
Why aren't there B batteries?
Episode overview

This week, spdyrel asks, “Where do the naming conventions for batteries come from? AAA, AA, D, etc.? Also why no B batteries?”

2x27
Do hats cause balding?
Episode overview

This week, Sammi Wood asks, “Is it true that if you wear a hat often enough it will cause you to bald?”

2x28
Why do we close our eyes when we sneeze?
Episode overview

This week, Hajera Fatima asks, “Why do we close our eyes when we sneeze?”

2x29
Is there an explanation for déjà vu?
Episode overview

This week, Kel A asks, “Is there an explanation for déjà vu?”

2x30
Do you need to wash food before eating it?
Episode overview

This week, Donovan Norman asks, “Is it necessary to rinse off apples and such before eating them?”

2x31
Why did we stop going to the moon?
Episode overview

This week, Elivelton Luza asks, “Here’s a question, WHY THE HECK didn’t we go AGAIN to the moon??”

2x32
What's the history of lawn mowing?
Episode overview

This week, ThisIsKir asks, “When did it become the norm to mow the lawn?”