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Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Evidence of regional continuity: (a) The anatomically modern Willandra Lakes Hominid 50 calvaria fro Evidence of regional continuity: (a) The anatomically modern Willandra Lakes Hominid 50 calvaria fro
Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo
Everyday situations sometimes present opportunities for children to build information processing ... Everyday situations sometimes present opportunities for children to build information processing ...
Performance of a delayed nonmatching-to-sample trial. Performance of a delayed nonmatching-to-sample trial.
Scientists should use a variety of media to present the message Scientists should use a variety of media to present the message
Earth Present Earth Present
Video: DNA Sequences - Dideoxy Sequencing

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