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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.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
![Long bones develop from several bony centers--one for the shaft and at least one for each end. The e](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_19_208905.jpeg)
![Cultural leveling is occurring rapidly, with some strange twists. These men from an Amazon tribe, ...](https://biology-forums.com/gallery/47/medium_660365_19_12_16_11_45_42_243291239.png)