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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.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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