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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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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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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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

These species are all at risk of extinction. Species with “slow” life-h These species are all at risk of extinction. Species with “slow” life-h
These species are all at risk of extinction. Species with “slow” life-h These species are all at risk of extinction. Species with “slow” life-h
Bureaucracies have their dysfunctions and can be slow and even stifling. Most, however, are highly ... Bureaucracies have their dysfunctions and can be slow and even stifling. Most, however, are highly ...
Cover heat source to slow cooling by placing a towel over it. Cover heat source to slow cooling by placing a towel over it.
Slow-wave sleep Slow-wave sleep
Economic recession in 2008 saw a small decrease in demand Economic recession in 2008 saw a small decrease in demand
Video: Summary of glucose catabolism

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