You can only remember 4 things at a time.
31
Studies suggest that people who appear to be constantly distracted have more "working memory" and "sharper brains".
13
The human brain doesn't stop developing until about 25 years old.
102
The Aztecs were the first to serve chocolate as a drink. They also mixed it with hot chili pepper to make it really 'hot'.
13
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The brain receives 20% of the body’s oxygen and 25% of total body glucose utilization, despite it accounting for only 2% of a person’s weight (about 1.4 kilograms).
8
Over its lifetime, the average microwave requires more energy to display a digital clock than to heat food.
10