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Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

A small herd of Przewalski's Horses A small herd of Przewalski's Horses
Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood. Pulse oximetry. The small device provides a digital readout of oxygen levels in the blood.
Small Town USA: Struggling to Survive Small Town USA: Struggling to Survive
Three phases of bone infection. Three phases of bone infection.
Bacteria Structures Used Bacteria Structures Used
Numbers 13-14 anwer only. Numbers 13-14 anwer only.
Video: Mendel's Pea Experiment

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