|
|
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
![The puppet, created for the Tbilisi Marionette Theatre, is controlled by forces hidden from public ...](https://biology-forums.com/gallery/47/medium_660365_25_12_16_1_15_24_244191928.jpeg)
![Creating a tent for turning from prone to supine or vice versa. Pin one side of the sheet against ...](https://biology-forums.com/gallery/32/medium_380798_22_08_17_9_33_20_32959665.jpeg)