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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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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.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack. Changes in bronchioles during an asthma attack: (A) normal bronchiole and (B) in asthma attack.
Japan’s surprise attack on Pearl Harbor on December 7, 1941, killed more than 2,400 American ... Japan’s surprise attack on Pearl Harbor on December 7, 1941, killed more than 2,400 American ...
a) Using the “claw” b) Isometric finger-pull exercise a) Using the “claw” b) Isometric finger-pull exercise
Anti-Inflammatory Drugs for Asthma and COPD Anti-Inflammatory Drugs for Asthma and COPD
Asthma and emphysema. Asthma and emphysema.
Physics - Exercise Problem Physics - Exercise Problem
Video: Random alignment at Metaphase I Animation

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