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Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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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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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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Thyroid conditions may make getting pregnant impossible.

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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Griffith's experiments that showed the transformation of bacteria by a “transfor Griffith's experiments that showed the transformation of bacteria by a “transfor
Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Staph Aureus bacteria Staph Aureus bacteria
Typhus bacteria Typhus bacteria
Bacteria with Internal Membranes Bacteria with Internal Membranes
Mechanisms of Transcription Regulation in Bacteria Mechanisms of Transcription Regulation in Bacteria
Video: Secondary Active Transport

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