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Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

The burning of fossil fuels has greatly increased atmospheric CO2 levels and temperatures. The burning of fossil fuels has greatly increased atmospheric CO2 levels and temperatures.
(A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend (A) The levels of the spinal cord and spinal nerves. (B) Photograph of the spinal cord as it descend
A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet A genetic bottleneck reduces a population temporarily to very low levels, removing much of its genet
Nursing Interventions for Different Levels of Anxiety Nursing Interventions for Different Levels of Anxiety
Threshold Levels of Carbon Monoxide Threshold Levels of Carbon Monoxide
Coastal sensitivity to rising sea levels Coastal sensitivity to rising sea levels
Video: The life cycle of protein

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