London's Independent newspaper has an article online detailing the 20 most influential inventions/discoveries courtesy of the Muslim world. Click the link and take a look, but also notice the dates of the discoveries -- the most recent ones are in the 1700s.
That shows you that there is a serious problem in Muslim society, and they're not doing anything to contribute to the improvement of mankind.
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Intresting, but most of the inventions listed can have roots traced back before the introduction of Islam. Kind of like that one company's motto, paraphrased "We didn't invent it, we just made it better"