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  • Why Does China Have So Many Billionaires?(02:49)
  • With over 300 billionaires, China's group of mega-wealthy citizens is rapidly expanding. So, why does China have so many billionaires?
  • Date: August 08, 2015
  • Source: TestTube News
  • Why Does America Love Guns?(02:55)
  • America has more guns than residents per capita, yet it also has the highest gun deaths per capita. So why does America love guns so much?
  • Date: June 25, 2015
  • Source: TestTube News
  • Why Does Iran Hate the US?(02:13)
  • Iran is indisputably one of the biggest opponents of the U.S. when it comes to foreign policy, but it's worth asking why. How did it all start?
  • Date: May 20, 2015
  • Source: Newsy
  • Why Does Rain Smell So Good?(03:28)
  • Do you love the smell of rain? Well, you're not alone, and science finally has the reason why!
  • Date: January 29, 2015
  • Source: DNews
  • Why Does Our Hair Turn Gray?(01:11)
  • Why does our hair turn gray as we get older? Dr. Charlotte Grayson combs through the science behind gray hair.
  • Date: June 12, 2012
  • Source: Everwell
  • Why Does Garlic Make Your Breath Stink(01:17)
  • Why does garlic make your breath stink? Dr. Charlotte Grayson answers this question and tells you how to keep garlic from fouling your breath.
  • Date: May 13, 2012
  • Source: Everwell
  • Why Does Beer Foam?(02:41)
  • We've known for awhile that when beer is poured, gases dissolve and make tiny bubbles that create a foam at the top of the drink! Now, scientists have...
  • Date: May 20, 2014
  • Source: DNews
  • Why Does Helium Change Your Voice?(01:20)
  • Why does sucking on helium make your voice sound funny? See if this question can stump Dr. Charlotte Grayson.
  • Date: October 01, 2009
  • Source: Everwell
  • Why Does My Body Do That?(01:38)
  • Get answers to why you get the chills, pruney fingers, pins and needles, brain freeze, and that falling sensation when you're about to fall asleep.
  • Date: October 03, 2013
  • Source: BuzzFeed
  • Why Won't Japan Stop Illegally Hunting Wha...(02:27)
  • In 1986, a worldwide moratorium was imposed on commercial whaling, yet countries like Japan continue to kill the whales. So why does Japan still hunt ...
  • Date: June 05, 2015
  • Source: TestTube News