The WD in WD-40 stands for Water Displacer.
30
Standard paper cannot be folded in half more than 7 times.
232
Wearing red increases attraction.
30
When glass breaks, the cracks move faster than 3,000 miles per hour.
47
Coins usually survive in circulation for about 30 years.
66
Mentally doing a task makes you better at it. Your mind can barely tell the difference.
18
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
479