Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
12
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
On average, there's 300 billion neurons in the octopus brain.
129
The desire to squeeze and hug cute things comes from the same place in your brain as aggression.
65
Fingers prune underwater not because of them absorbing the water or washing away the oil, but because of an evolutionary trait caused by the brain to enhance the grip of your fingers underwater.
24
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
On average, there's 100 billion neurons in the human brain.
83