With mercuric chloride, also known as 鈥渃orrosive sublimate.鈥 People have been intrigued by mercury and its compounds for over 3500 years. Ko Hung, an ancient Chinese alchemist was one of the first...
Why is it that in hot countries we put salt on ice in the ice cream makers to keep the ice from melting, while in cold countries we put salt on ice to melt it? In both cases, the answer is based on...
A friend of mine is very much opposed to using a plastic kettle, for fear of 聽some of the toxins leaching into the water.聽 He therefore will use only a metal kettle.聽 Is there any basis for this?...
Your question is way to inclusive to accurately answer ---the answer is "it depends"----some fish can 聽be perfectly safe to eat and other imports can be quite problematic. Here is a recent short...