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There are more nerve cells in one human brain than there are stars in the Milky Way.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.