This section will feature on a regular basis a new, free, original research essay with related photographs, diagrams, and a wealth of facts and figures on a variety of science-related subjects. This resource material may be used and copied freely for use in school essays, science projects, or any other applications. This week's free subject essay explains how mysterious proteins known as prions cause Mad Cow Disease as well as the human variant Creutzfeld-Jacob Disease. We are also offering archived research essays (The Oil Refining Process) as MS Word document downloads for a nominal fee. Prions and BSE - Mad Cow Disease - Free Research Essay The Oil Refining Process - Research Essay $3.95 CLICK HERE for a little SCIENCE music while you browse! Note: Click only after page has completely loaded. ==================================================== ==================================================== Science City is a proud 5-STAR Yahoo! Merchant.     ALL ITEMS IN STOCK! U.S. shipments are sent by USPS Priority Mail or DHL /FedEx Courier with cost based on weight. Delivery in 2 - 6 days. 2 Day Air (Guaranteed) is also available for U.S. shipments. ===================================================== Great shipping rates to CANADA! Shipping cost using airmail post is automatically calculated based on weight and can be seen during checkout before purchase. ===================================================== Bookmark this site! You will want to visit again soon! ===================================================== Tell your friends about the Science City site! Click here!                                                                                 ===================================================== As you view the individual pages, remember that you can click on the image to enlarge it. Press your "BACK" button to return. =====================================================