We heard an interesting talk on Dark matter at the last SLAS meeting. Wikipedia has a good article on dark matter that repeats a lot of the points made at the talk as well as interesting hyper links. Using Wikipedia can supplement talks at SLAS meetings. Sincerely, Gary Vardon The book DO It Right will help you understand vital ideas leading to your greater success. GO to PublishAmerica.com Consulting For Profit is also available. Learn how to make money as a consultant. Jokes? is a wild and witty look at the world and the mbook Marketing can show you how to make good money selling goods and services. All books are available at PublishAmerica.com