Mosquito Repellant
Humans have tried for centuries to find a successful repellant to use against mosquitoes. ...
Imagine being confined for days at a time in a huge, iron tube with only your head sticking out of the end. Many children stricken with polio had to lie in these iron lungs during the polio outbreak of 1916, which left 6,000 dead and 27,000 paralyzed. Polio, or infantile paralysis, was a communicable disease that invaded the nervous system, leaving the victim paralyzed or sometimes dead. Over 50% of the poliovirus cases were children ages 3 to 5. In 1952, there were 52,628 polio cases recorded. The disease had plagued the world as far back as the ancient Egyptians. In fact, Egyptian paintings depict people with withered limbs and some walking with canes, all of them young. The disease was stopped on April 12, 1955 when scientist Jonas Salk (1914-1995) developed a safe polio vaccine. After the polio vaccine was released in the United States, polio cases dropped by 85 to 90% in only two years time.
Humans have tried for centuries to find a successful repellant to use against mosquitoes. ...
A tattoo is a permanent design or mark made on the skin with colored ink. To make a tattoo...
Diabetes is a disease that occurs when the body fails to produce or properly use insulin, ...