Uncategorized
- Health & Medicine
Smoking Gun? Mouse tests link nicotine to crib death
Nicotine may impair a molecule that's necessary for arousing people and other animals from sleep, an effect that could account for the heightened risk of sudden infant death syndrome in babies born to women who smoked during pregnancy.
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There are unfortunate multiple misuses of the word “artificial” in describing lab-grown diamonds in this article. In gemological use, artificial means imitation or not real. In fact, the lab-grown diamonds described in your article are real, synthetic diamonds with all the properties and chemistry of natural diamonds. Fred WardBethesda, Md.
- Materials Science
Better-Built Diamonds: Fast growth, purity may multiply uses
A research group has fabricated the purest diamonds ever made or found, and another has devised a way to grow high-quality diamonds up to 100 times faster than typical growth rates.
