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Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Single atoms form the nodes of an elementary quantum network Single atoms form the nodes of an elementary quantum network
Single bull elk are vulnerable to predation by wolves. Single bull elk are vulnerable to predation by wolves.
Donor DNA is transferred as a single strand Donor DNA is transferred as a single strand
Visual Angle and Spatial Frequency Visual Angle and Spatial Frequency
The Morris Adjustable Chair, designed by Philip Webb, made by Morris, Marshall, Faulkner & Co. The Morris Adjustable Chair, designed by Philip Webb, made by Morris, Marshall, Faulkner & Co.
Normal oxygen sensor frequency is from about one to five times per second. Normal oxygen sensor frequency is from about one to five times per second.
Video: Semidiscontinuous DNA replication

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