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Author Question: When snowmobiles replaced dogsleds as the main means for Inuit transportation it a. led to ... (Read 21 times) |
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.