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I read with interest your article on determining the origin of emeralds by measuring oxygen isotopes. While there is great potential for legal and historical applications, I think that using this method to determine the source of gems for purely economic reasons is ludicrous. At least for myself, whether an emerald originated in Austria or […]
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Corn Defenses: Bitten plants deploy gut-rotting enzyme
Some corn varieties that arose on the Caribbean island of Antigua defend themselves with chemical attacks that leave insect gut linings in tatters.
- 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.
