Optical illusion: Only people with perfect eyesight can correctly guess the hidden numbers
Optical illusions challenge eyes and brains with hidden numbers in complex patterns. This test features a 6-digit number ...
Harvard Medical School15 小时
Sugar and the Brain
Glucose, a form of sugar, is the primary source of energy for every cell in the body. Because the brain is so rich in nerve cells, or neurons, it is the most energy-demanding organ, using one-half of ...