2011 is the International Year of Chemistry. So scientists at the national meeting of the American Chemical Society in Anaheim ___1___. (Or a beaker.) And they celebrated as only chemists can—by...

Usually, we trust ___1___ to solve problems. Is a runny mixture too thick? Add some fluid. That’ll make it runnier. Except when the fluid makes it thicker. Scientists now think they know why. Th...

Imagine Van Gogh’s paintings of yellow sunflowers. Now imagine the flowers brown. Eh, not so good. Sadly, we may someday see what that would look like. Because the bright yellow paints on the ca...

今天一起来学习一下如何给羊毛染色吧。Mix 8 grams of alum with 7 grams of cream of tartar in a small amount of hot water. Add the solution to a metal pan of cool water. Next, add the wool and place...

染料可以给生活增添色彩。大多数服装是用染料上色的。现代的、人造的染料可能很昂贵。 Jenny Dean Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can...