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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

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The horizontal fraction bar was introduced by the Arabs.

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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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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

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Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Three ways that factors affect mortality in response to changes in population density. Three ways that factors affect mortality in response to changes in population density.
Average Global Temperature during the Phanerozoic Average Global Temperature during the Phanerozoic
Temperature Changes on Heart Rate Temperature Changes on Heart Rate
Temperature Scales Temperature Scales
Dash Warning Lights: Coolant Temperature Light Dash Warning Lights: Coolant Temperature Light
Observed global land and ocean surface temperature anomalies since 1850 Observed global land and ocean surface temperature anomalies since 1850
Video: Genetics of Cancer

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