A very good show on pbs that tries to make science fun. The titular science guy is a big fan of chemistry, biology, physics, geology, and pretty much all science barring social science. A show that you don't appreciate the value of until you get to watch it in school.
knol is an collerative dictionary. here is knol dictionary where every word, sentence or situation may have definition. wellcome to knol dictionary!
you can find sitemap in this page.
