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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

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Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

The hierarchy of forces governing protein structure. The hierarchy of forces governing protein structure.
The hierarchy of biological classification's eight major taxonomic ranks. The hierarchy of biological classification's eight major taxonomic ranks.
Maslow's Hierarchy of Needs Maslow's Hierarchy of Needs
Four levels of protein hierarchy Four levels of protein hierarchy
Maslow's Hierarchy of Needs Maslow's Hierarchy of Needs
Maslow’s hierarchy of needs. Maslow’s hierarchy of needs.
Video: What are Taste Receptors? How Does it Work? Animation

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