可商议

• Why don't country flags use the color purple
• Where do new words come from?
• History of Thanksgiving
• Pumpkin Facts
• Halloween History from National Geographic
• How the world's first metro system was built
• What Month Begins the New Year
• Winter Holiday Celebrations Around the World
• The Evolution of the book
• Where did English come from?
• 5 ways to listen better
• The benefits of a bilingual brain
• How rollercoasters affect your body
• The history of the world according to cats
• Shh! Sound health in 8 steps
• Daylight Saving Time 101
• The surprising link between stress and memory
• Animals Cannot be Blue
• The Difference between the United Kingdom, Great Britain and England Explained (DIFFICULT) 
• The Environmental cost of free two-day shipping
• Caffeine 101
• A brief history of dogs
• How Does the Stockmarket Work?
• A Brief History of Yellowstone National Park
• The History of Chocolate
• How to Speak so people will listen
• The history of museums
• Why do people have seasonal allergies?
• Rockets 101 (DIFFICULT)
• A Brief History of Alcohol
• The History of Tea
• The History of Valentine's Day
• Which is better: Soap or Hand Sanitizer (DIFFICULT)
• The Hidden Power of smiling
• Helping others makes us Happier
• Is Google killing your memory?
• Why people fall for misinformation?
• The History of Labor Day
• How to Disagree Productively
• How Fast Can a Vaccine Be Made
• Does Your Vote Count? The Electoral College Explained
• How to Stay Calm Under Pressure
• How the food you eat affects your brain 
• Is Meat Bad for you?  Is Meat Unhealthy (DIFFICULT)
• When is a pandemic over?
• Which type of milk is best for you?
• Why women's clothing sizes don't make sense
• Behind Costco's Treasure-Hunt Shopping Strategy
• How is your phone changing you?
• What is pop art?
• How does herd immunity work?
• Why do we wrinkle when wet? 
• 10 ways to have a better conversation
• Why are airplanes slower than they used to be?
• Meet the Bluefin Tuna, the Toughest Fish in the Sea
• How well do Masks Work
• 3 rules for better work-life balance
• Is there a secret to creativity
• Why does February only have 28 days? 
• How long should your naps be? 
• The secrets of the World's Most Famous Symphony
• 5 ways social media is changing your brain 
• How to choose your news 
• How to practice effectively...for just about anything 
• There's No Shame in taking care of your mental health
• What's the Best Country to Live in
• Why should you read Charles Dickens?
• The Economics of IKEA
• Who Decides What's In The Dictionary? 
• Why are there so many types of Apples 
• How to calm your anxiety, from a Neuroscientist 
• What is McCarthyism? [NEW!!!!]
  
• Día de los Muertos aka the Day of the Dead [NEW!!!!]
• How Nintendo Competes Differently [NEW!!!!]
• The Rise and Fall of Black Friday [NEW!!!!]