You can only remember 4 things at a time.
31
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
154
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 Gmail logo was designed the night before it was launched.
68
The human brain is more active during sleep than during the day.
28
There is enough energy in one bolt of lightning to power a home for two weeks!
102
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492