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Did you know?

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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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

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Thyroid conditions may make getting pregnant impossible.

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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.

An individual's performance can be limited by environmental conditions, such as temperature. Ac An individual's performance can be limited by environmental conditions, such as temperature. Ac
Succession in the intertidal zone involves colonization and competition for limited space among spec Succession in the intertidal zone involves colonization and competition for limited space among spec
Cranial capacity has increased approximately fourfold over the last 3.5 million years of hominin evo Cranial capacity has increased approximately fourfold over the last 3.5 million years of hominin evo
Two stubby screwdrivers used to access screws that have limited space above. A straight blade is on ... Two stubby screwdrivers used to access screws that have limited space above. A straight blade is on ...
As the world’s population continues to grow, demands on limited resources for food production As the world’s population continues to grow, demands on limited resources for food production
For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately For the circuit in Figure 1, assume ideal diodes. The peak inverse voltage is approximately
Video: Five phases of cardiac cycle & Atrial contraction

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