Surveys reveal that only 50 percent of people questioned know that the Earth goes around the sun once a year, and only 40 percent realize that electrons are smaller than atoms. That’s sad enough,...
Gutta percha is the hardened latex of the Palaquium gutta tree, originally native to Malaysia. This is a natural “thermoplastic” substance, meaning it can be softened with heat and shaped into a...
“Boil the nipples!” was the advice given in 1984 by the Food and Drug Administration in the U.S. to parents who were bottle feeding their infants or calming them with pacifiers. The presence of...
Smells are caused by volatile compounds that stimulate receptors in our nose. There is a large variety of such compounds with a great diversity of molecular structures. But many of the smells...
