Random Human Facts

    96 facts tagged with Human Facts

    By weight, Bone is five times stronger than steel.
    417
    After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
    139
    The human eye blinks an average of 4,200,000 times a year.
    233
    The human brain doesn't stop developing until about 25 years old.
    102