Blinking helps to wash tears over our eyeballs. That keeps them clean and moist. Also, if something is about to hit our eye, we will blink automatically.
Our body has some natural protection for our eyes. Our eyelashes help to keep dirt out of our eyes. Our eyebrows are made to keep sweat from running into our eyes.
Our eyes are very important to us, and we must protect them. We don't want dirt, sand, splinters or even fingers to get in our eyes. We don't want our eyes to get scratched or poked. That could damage our sight!
The world's first test tube twins are Stephen and Amanda Mays born June 5, 1981.
Some people drink the urine of pregnant women to build up their immune system.
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
Every day, over 1,300 babies are born prematurely in the USA.
People that use mobile phones are 2.5 time more likely to develop cancer in areas of the brain that are adjacent to the ear they use to talk on the mobile phone.
Over 90% of diseases are caused or complicated by stress.
Over 436,000 U.S. Troops were exposed to depleted uranium during the first Gulf war.
Many cancer patients that are treated with chemotherapy lose their hair. For some when the hair grows back, it can grow back a different colour, or be curly or straight.
Women hearts beat faster than men.
The human heart weighs less than a pound.
Three years after a person quits smoking, there chance of having a heart attack is the same as someone who has never smoked before.
The first open heart surgery was performed by Dr. Daniel Hall Williams in 1893.
Each day 400 gallons of recycled blood are pumped through the kidneys.
In the early nineteenth century some advertisements claimed that riding the carousel was good for the circulation of blood.
The kidneys filter over 400 gallons of blood each day.
If all the blood vessels in your body were laid end to end, they would reach about 60,000 miles.
The smallest bone in the human body is the stapes bone which is located in the ear.
The human face is made up of 14 bones.
The chances of getting a cavity is higher if candy is eaten slowly throughout the day compared to eating it all at once and then brushing your teeth.
Humans are born with 300 bones in their body, however when a person reaches adulthood they only have 206 bones. This occurs because many of them join together to make a single bone.
Your thigh bone is stronger than concrete.
The chances of getting a cavity is higher if candy is eaten slowly throughout the day compared to eating it all at once and then brushing your teeth.
If an identical twin grows up without having a certain tooth, the other twin will most likely also grow up with that tooth missing.
Humans are born with 300 bones in their body, however when a person reaches adulthood they only have 206 bones. This occurs because many of them join together to make a single bone.
Your thigh bone is stronger than concrete.
Adult human bones account for 14% of the body's total weight.
Gardening is said to be one of the best exercises for maintaining healthy bones.
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