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...social history of polio epidemics in the USA in the twentieth century. Click to view the Polio Case Study...Vaccination: 2.1 From passive to active - Since Jenner's pioneering discovery, many new vaccines have been developed (Table 1). The country in which a vaccine was first introduced is usually the one that developed it; France and the USA are among the most prominent:...

...social media. If using Twitter, try using the hashtag #OLOrion to share your images and compare them with other people studying this course...Week 1: Beginning the journey: 1.1.4 Who was Orion? - [An artist’s impression of the hunter Orion.] Figure 6 An artist’s impression of the hunter Orion. In Greek mythology, Orion was a hunter, the son of Poseidon, god of the...

...interaction - The balance of properties needed in a particular product varies enormously, depending on the exact duty that product will perform in service, the environment in which it will operate, and the way it will interact with the user or consumer. The last factor has assumed much greater influence in product design as competition between different manufacturers...