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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Though “Krazy Glue” or “Super Glue” has the ability to seal small wounds, it is not recommended for this purpose since it contains many substances that should not enter the body through the skin, and may be harmful.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.