• +31400

  Do mobile phones affect the ecosystem, including human beings?

  Dinesh Kumar — Ranchi, Jharkhand

• +22698

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

  Sam — Sydney

• +22161

  Why are there white spots in fingernails ?

  Soujanya — Bengaluru

• +21430

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

  Brooke — Allenhurst, GA

• +20242

  Who decides the queen is the queen?

  Jessica — Robinson, TX

• +19826

  What is the Hope Diamond?

  Meher — Edison, NJ

• +19018

  How do Miracle Berries work?

  Zoey — Copperas Cove, TX

• +17483

  What is the difference between a recorder and a flute?

  Rachel — Brentwood, TN

• +17373

  Who invented Wi-Fi?

  Aditya — singapore

• +16851

  Why does the moon change shape?

  Rafaela — Manila

• +15923

  How does the stock market work?

  Rogaciano — Otsego

• +15907

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

  Shantie — Carteret

• +15507

  how do our brains form pictures

  alyssa — wellington

• +15073

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

  Lizzie — Gastonia

• +14923

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

  David — Sacramento

• +14462

  Can we actually multi-task?

  Jennifer — Northbrook, IL

• +14372

  What are Lichtenberg figures?

  Evan — Wind Lake, WI

• +14040

  How does a hard drive work?

  Phoenix — Bremerton

• +13941

  What is the powder on butterfly wings?

  Kiara — Owingsville, KY

• +13798

  what is a conspiracy theory?

  jacob — Grapevine/Colleyville, TX

• +13156

  What is synesthesia and why does it happen?

  Prajusha — New York city, NY

• +13144

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

  Abby — Buford, GA

• +13015

  Why does colder air feel “crisp”

  Sophie — Westchester County, NY

• +12979

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

  Lance — Louisville, KY

• +12535

  What do butterflies do when it is raining?

  Nancy — Charlottesville, VA

• +12341

  What is quinoa?

  Vanessa — Omaha, NE

• +11936

  Why Is Kindergarten Called Kindergarten?

  Emory — Oklahoma City, OK

• +11915

  How does an oxbow lake form?

  Margie — Plainfield, IL

• +11868

  How does an axolotl regrow its limbs?

  Norah — Glen Rock, NJ

• +11779

  What is the Rosetta Stone?

  @MrsSmithGE — Yukon

• +11743

  What is the Fibonacci Sequence?

  Daniel — Fremont, CA

• +11364

  how was water created

  Chiamaka

• +10957

  Why do smells trigger memories?

  Anne — Noblesville, IN

• +10489

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

  Katriona — Lower Longley

• +10369

  What is a rhombicosidodecahedron

  Caroline — Charleston , SC

• +10184

  How does the Sensitive Plant work?

  Zackary — Milwaukee

• +9864

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

  Eevee — Lake in the Hills, IL

• +9836

  why are there different clefs for different instruments in music?

  Abby — Buford

• +9700

  How many people have hydrocephalus?

  Elizabeth — Centreville, VA

• +9464

  Who Invented 0?

  Madison — Oklahoma City, OK

• +9261

  Can you mix water and air completly?

  AL

• +8081

  whats the difference between a shetland pony and and regular pony

  Abby — Conneticut

• +7883

  How does a Brita filter work?

  Jessica — Baltimore, MD

• +7693

  Why is a quotient called a quotient?

  Nicole — Greenwood, IN

• +7688

  What do the plastic recycling numbers mean?

  Anamaria — Newmarket

• +7592

  Where is Coober Pedy?

  Deanne — Sydney

• +3278

  What is a doppelganger?

  Karah — Sandusky , OH

• +2409

  Can dogs really smell cancer?

  Hannah — waukesha , WI

• +1974

  Why can we remember song lyrics, but not full books?

  Eddie — Suffolk, VA

• +1948

  Why were all the animals in Prehistoric time giant? Like the giant mammoth and buffalo?

  Jennifer — Cleveland, OH

• +1878

  are cashews nuts even though they grow on fruits?

  Nathan — London, MI

• +1441

  How is Mercury shrinking ?

  Nico — Tulaew, CA

• +1330

  How do you make an app for the iPad?

  Jennifer — Irvine, CA

• +1008

  oboe vs clarinet

  Gao — Kuala Lumpur

• +991

  What is a nudibranch?

  Merrit — Coeur d Alene

• +962

  What is the Taj Mahal and why is it famous?

  Ridha — Auckland

• +644

  HOW DID SCIENTISTS FIND OUT ABOUT LIGHTYEARS?

  carl — Cortland