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Who Said That
Who said “Extraterrestrial” first?
In its meaning of something from outside or beyond the earth, the word extraterrestrial was first used by H. G. Wells in his 1898 novel War of the Worlds. The…
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Life Style
Are Public Pools Safe?
The sign says “Please shower before entering pool.” What is the purpose of that request? Isn’t showering a wasteful prelude to taking a refreshing plunge? The truth is that the…
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Life Style
Choosing the Sex of Your Baby
Scientists have used the size difference between the X and Y chromosomes to develop technologies that may help people choose the sex of their babies. Some techniques use dyes to…
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Food
Sugar Substitutes and Fake Fats
Many weight-conscious people turn to artificial sweeteners and fat substitutes to cut calories without sacrificing their favorite foods. Chemically, how do these sugar and fat replacements compare with the real…
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Food
Organic or Natural
The word organic has multiple meanings. To a chemist, an organic compound contains carbon and hydrogen. Chemically, all food is therefore organic. To a farmer or consumer, however, organic foods…
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Endocrine System
Mexican cavefish living happly with Diabetes
These strange little fishes live in caves of eastern Mexico. It’s strange because cave environment is entirely dark and there is no plant, therefore there is no food available for…