When Einstein died in Princeton, New Jersey (USA), he requested not to be examined or tested. He wanted to be cremated. However, when Einstein died, a scientist stole his brain and ran away to test it.

The brain of Albert Einstein has been a subject of much research and speculation. Albert Einstein's brain was removed within seven and a half hours of his death.

His brain has attracted attention because of his reputation as one of the foremost geniuses of the 20th century, and apparent regularities or irregularities in the brain have been used to support various ideas about correlations in neuroanatomy with general or mathematical intelligence.

Scientific studies have suggested that, within Einstein's brain, regions involved in speech and language are smaller, while regions involved with numerical and spatial processing are larger. Other studies have suggested an increased number of glial cells in Einstein's brain.

Forty years after testing and examining it, he finally gave it to other scientists to study it. It had been discovered that Einstein's brain had 17% more neurons than a normal person has.

It was believed that Einstein’s IQ was 160 and an average person’s IQ is 100. This is why Einstein was so good at maths.