I am going to give a speech for my College public speaking class on roller coasters. The speech is meant to be informative and my three main topics are the safety, what goes into designing a ride, and how the coaster has evolved over the years. I was wondering if anyone could give me any information, any websites to go to, or even anything you might have in your own collection pertaining to the safety of the rides and what goes into the design. I have a lot of information, well over enough to write an effective speech, but I would like to know if anyone can give me some more information. I knew this would be the place to come for help, thanks guys.