Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Service dogs are trained to know when they are on duty. When their harness is on, they know they are at work. When you take it off they instantly become playful and energetic.
11
A Native American tribe in South Dakota collects bottle caps left by campers, using them as currency. Several banks in the area now recognize the caps as legal tender.
225
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
118
Some British police cars carry a teddy bear to console children after an accident.
46
You can alleviate a tickly throat by scratching your ear.
9
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Brain scans show that people who view photos of a beloved experience an activation of the caudate - the part of the brain involving cravings.
103