• +473

  How does a Brita filter work?

  Jessica — Baltimore, MD

• +684

  Why Is Kindergarten Called Kindergarten?

  Emory — Oklahoma City, OK

• +1031

  How does the pink in the sky happen at sunset or sunrise?

  Katriona — Lower Longley

• +3081

  What do butterflies do when it is raining?

  Nancy — Charlottesville, VA

• +3918

  Who invented Wi-Fi?

  Aditya — singapore

• +2153

  why do we have to write in cursive when signing documents and other things?

  Abby — Buford, GA

• +2103

  What is a rhombicosidodecahedron

  Caroline — Charleston , SC

• +3494

  How does the Sensitive Plant work?

  Zackary — Milwaukee

• +3167

  why are there different clefs for different instruments in music?

  Abby — Buford

• +1581

  whats the difference between a shetland pony and and regular pony

  Abby — Conneticut

• +5335

  Who was Stephen Hawking?

  Alex — Madison

• +5795

  What is quinoa?

  Vanessa — Omaha, NE

• +7079

  Why is it colder the higher you get, even though it is closer to the sun?

  Lizzie — Gastonia

• +6311

  Why is a negative number and another negative number positive when multiplied?

  Abby — Buford, GA

• +7011

  How does a hard drive work?

  Phoenix — Bremerton

• +6263

  What is a quokka?

  Bob — Los Angeles, CA

• +5202

  How does an axolotl regrow its limbs?

  Norah — Glen Rock, NJ

• +7312

  Do all animals stretch when they wake up? Other than feeling good, why do we do it?

  David — Sacramento

• +10089

  What is the difference between a recorder and a flute?

  Rachel — Brentwood, TN

• +9366

  How does the stock market work?

  Rogaciano — Otsego

• +12899

  Why are there white spots in fingernails ?

  Soujanya — Bengaluru

• +12379

  What is the Hope Diamond?

  Meher — Edison, NJ

• +8172

  Why does colder air feel “crisp”

  Sophie — Westchester County, NY

• +10562

  What happens to sugar when it's dissolved in water?

  Shantie — Carteret

• +10184

  what's OCD?

  Rylan — Spanish Fork, UT

• +14591

  Can sand turn to glass if it's struck by lightning?

  Brooke — Allenhurst, GA

• +9248

  What is the Fibonacci Sequence?

  Daniel — Fremont, CA

• +11334

  How was perfume made?

  Braxton — Kansas City, MO

• +9622

  What is the Rosetta Stone?

  @MrsSmithGE — Yukon

• +9917

  How does an oxbow lake form?

  Margie — Plainfield, IL

• +11177

  What is synesthesia and why does it happen?

  Prajusha — New York city, NY

• +12475

  What are Lichtenberg figures?

  Evan — Wind Lake, WI

• +16606

  How do Miracle Berries work?

  Zoey — Copperas Cove, TX

• +19571

  Why do your eyes develop shadows when you're tired?

  Sam — Sydney

• +17422

  Who decides the queen is the queen?

  Jessica — Robinson, TX

• +11798

  What is the powder on butterfly wings?

  Kiara — Owingsville, KY

• +14599

  Why does the moon change shape?

  Rafaela — Manila

• +11833

  what is a conspiracy theory?

  jacob — Grapevine/Colleyville, TX

• +27457

  Do mobile phones affect the ecosystem, including human beings?

  Dinesh Kumar — Ranchi, Jharkhand

• +8713

  Why do smells trigger memories?

  Anne — Noblesville, IN

• +7635

  If you come out of the shower clean, why is the towel dirty after you use it?

  Eevee — Lake in the Hills, IL

• +1360

  What is a doppelganger?

  Karah — Sandusky , OH

• +12202

  Can we actually multi-task?

  Jennifer — Northbrook, IL

• +12807

  how do our brains form pictures

  alyssa — wellington

• +7867

  How many people have hydrocephalus?

  Elizabeth — Centreville, VA

• +5879

  What do the plastic recycling numbers mean?

  Anamaria — Newmarket

• +8920

  how was water created

  Chiamaka

• +6963

  Can you mix water and air completly?

  AL

• +9718

  Do girls remember their dreams more often than boys and if yes, why?

  Lance — Louisville, KY