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Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Illicit drug use costs the United States approximately $181 billion every year.

The path of sound waves through the outer, middle, and inner ear. The path of sound waves through the outer, middle, and inner ear.
Color-enhanced CT scan showing two malignant tumors in the brain. Color-enhanced CT scan showing two malignant tumors in the brain.
Lithotripsy. The direction of a sound pulse crushes the stones into smaller fragments that can be pa Lithotripsy. The direction of a sound pulse crushes the stones into smaller fragments that can be pa
Electromagnetic Radiation Electromagnetic Radiation
Magnetic waves Magnetic waves
Light Waves in the Electromagnetic Spectrum Light Waves in the Electromagnetic Spectrum
Video: The life cycle of protein

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