We have become familiar with the routine at airports. Your carry-on bags are passed through an x-ray machine after which an officer will often wipe your bag with a piece of fabric which is then...
Glass is made by mixing and heating silica (sand), sodium carbonate (soda) and limestone (calcium carbonate).听 But, as we know, glass breaks quite easily, especially when subjected to sudden...
Science is as a quest for knowledge. Sometimes it ends with a clear-cut result, often not. The Earth goes around the sun. Water is composed of hydrogen and oxygen. The speed of light is 299,792,458...
Because my wife and I had a wonderful dog for nearly 9 years and since I give a lecture on human waste in our Environment course at 69热视频, I was most interested to see the article that is making...
Solvents! What do you think of? Nail polish remover? Dry cleaning fluid? Yes, those are solvents. But there鈥檚 a lot more to the story. Chemistry would not be possible without the use solvents. Most...
鈥淲hen there is substantial, credible evidence of danger to human or environmental health, protective action should be taken despite continuing scientific uncertainty.鈥� That鈥檚 the 鈥淧recautionary...
Everyone has skeletons in their closet. There鈥檚 at least one in mine. A couple of years ago while on a cruise I pinched a spoon from the dining room. It wasn鈥檛 because of any lack of spoons at home...
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