• +1398

  Who was Stephen Hawking?

  Alex — Madison

• +2407

  What is quinoa?

  Vanessa — Omaha, NE

• +2843

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

  Lizzie — Gastonia

• +2900

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

  Abby — Buford, GA

• +3450

  How does a hard drive work?

  Phoenix — Bremerton

• +3072

  What is a quokka?

  Bob — Los Angeles, CA

• +2010

  How does an axolotl regrow its limbs?

  Norah — Glen Rock, NJ

• +3754

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

  David — Sacramento

• +6741

  What is the difference between a recorder and a flute?

  Rachel — Brentwood, TN

• +6222

  How does the stock market work?

  Rogaciano — Otsego

• +8533

  Why are there white spots in fingernails ?

  Soujanya — Bengaluru

• +8184

  What is the Hope Diamond?

  Meher — Edison, NJ

• +5014

  Why does colder air feel “crisp”

  Sophie — Westchester County, NY

• +7325

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

  Shantie — Carteret

• +6596

  what's OCD?

  Rylan — Spanish Fork, UT

• +10237

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

  Brooke — Allenhurst, GA

• +6265

  What is the Fibbonaci Sequence?

  Daniel — Fremont, CA

• +7305

  How was perfume made?

  Braxton — Kansas City, MO

• +6494

  What is the Rosetta Stone?

  @MrsSmithGE — Yukon

• +7000

  How does an oxbow lake form?

  Margie — Plainfield, IL

• +8281

  What is synesthesia and why does it happen?

  Prajusha — New York city, NY

• +9570

  What are Lichtenberg figures?

  Evan — Wind Lake, WI

• +13355

  How do Miracle Berries work?

  Zoey — Copperas Cove, TX

• +7062

  What are Internet cookies?

  Ava — San Francisco , CA

• +16228

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

  Sam — Sydney

• +21086

  How can I fly?

  John — Louisville

• +14398

  Who decides the queen is the queen?

  Jessica — Robinson, TX

• +12310

  How do you publish a book?

  Kennedy — Somerset, KY

• +9308

  What is the powder on butterfly wings?

  Kiara — Owingsville, KY

• +11893

  Why does the moon change shape?

  Rafaela — Manila

• +12430

  When were the first arcade games made?

  Liam — Invercargill

• +9452

  what is a conspiracy theory?

  jacob — Grapevine/Colleyville, TX

• +4768

  How Did Slang Words Exist?

  Dallas — Valparaiso, IN

• +23755

  Do mobile phones affect the ecosystem, including human beings?

  Dinesh Kumar — Ranchi, Jharkhand

• +7398

  Why do smells trigger memories?

  Anne — Noblesville, IN

• +5520

  How do they photograph and record video in the ocean?

  jennifer — Rockford

• +6317

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

  Eevee — Lake in the Hills, IL

• +10827

  Can we actually multi-task?

  Jennifer — Northbrook, IL

• +11254

  how do our brains form pictures

  alyssa — wellington

• +6827

  How many people have hydrocephalus?

  Elizabeth — Centreville, VA

• +4838

  What do the plastic recycling numbers mean?

  Anamaria — Newmarket

• +7500

  how was water created

  Chiamaka

• +5576

  Can you mix water and air completly?

  AL

• +7042

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

  Lance — Louisville, KY