|
|
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.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
There are more bacteria in your mouth than there are people in the world.
![Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and](https://biology-forums.com/gallery/47/medium_33_09_09_11_10_08_14_16952448.jpeg)
![The crania, and especially the faces of KNM-ER 1813 and 1470, differ enough that some scientists inc](https://biology-forums.com/gallery/47/medium_275510_22_02_15_6_06_44_207742049.jpeg)