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Author Question: On the planet Venus, a Venusian picks up a stone and drops it into a deep hole. If it falls 3 m in 1 ... (Read 29 times) |
The horizontal fraction bar was introduced by the Arabs.
Vaccines prevent between 2.5 and 4 million deaths every year.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.