75 Riddles for Adults (With Answers!)
Hard Riddles That'll Leave You Stumped
Good luck trying to figure these out.
23 Brain Teasers to Test Your Genius
Can You Guess These Major Cities Based on the Airport Code?
MSY? SDF? CVG? They're not as obvious as you'd think.
Beat the Bee
Here Are the 30 Toughest National Geographic GeoBee Questions From the Past 30 Years
Celebrating three decades of budding atlas buffs.
Can You Identify Your State From a Photo of Its Capitol Building?
You know your state's capital, but what about its capitol building?
30 Real Trivial Pursuit Questions You Need to Be a Genius to Answer Correctly
You'll have to be more than a trivia master to ace these questions.
30 Questions You'd Need to Ace to Pass 6th Grade English
Wait—an "indefinite pronoun" is what again?
30 Questions You'd Need to Ace to Pass 6th Grade Math
Would you be able to graduate from middle school?
The Cosmic Gate
The Mysteries about Space No Scientist Can Explain
The truth is out there, but no one's found it yet.
Fun with Dogs
Can You Spot the Adorable Corgi Hiding in These Photos?
Meet the cuter, IRL version of "Where's Waldo?"
Are You Smarter Than an Astronaut? Try These Brain Teasers to Find Out
You apparently need lots of mental dexterity if you're blasting into orbit.
Riddle Me This!
50 Amazing Riddles Only Geniuses Can Solve
Step up to test the boundaries of your mind!
What It's Like to Take the NFL's Cognitive Exam
Finally, definitive proof that I'm smarter than a linebacker!
Check Out the Mind-Boggling Optical Illusions Driving Everyone Crazy
I Took the President's Cognitive Test and Here's How I Scored
The Montreal Cognitive Assessment is touted as the preeminent brain function exam.