Glauber, Johann Rudolf (1604-1668), a German chemist. Glauber was the first to describe clearly the preparation of hydrochloric acid. He discovered sodium sulfate, which is commonly known today as Glauber's salt. Glauber found it had laxative properties and attributed to it remarkable healing powers. Glauber's salt is still sometimes used as a mild laxative, and also has industrial uses, chiefly in the manufacture of glass.
He is famous for a phrase he never said, for wearing turtlenecks and for hosting the original 'Cosmos' TV series. As enthusiastic about the stars as he was about marijuana, Carl Sagan led a very surprising life. Here are 10 cool facts.
Albert Einstein was a pretty smart guy. When you look up the word "genius" in the dictionary, so the saying goes, it's a pretty safe bet you'll see Einstein's mug. Think you’re smart enough to take on a quiz about the famed thinker?