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...Introduction - You will have little hesitation in distinguishing the metal blade of a kitchen knife from the handle which is probably made of plastic or wood. But what really distinguishes a metal from a non-metal? Metals are used in many different ways, such as in jewellery, pots and pans and in wires for conducting electricity and you can probably think of many other...

...manage your digital badges online from My OpenLearn. In addition, you can download and print your OpenLearn statement of participation - which also displays your Open University badge. The Open University would really appreciate a few minutes of your time to tell us about yourself and your expectations for the course before you begin, in our optional start-of-course...

...Introduction - This course focuses on the strategies available in the twenty-first century to tackle major infectious diseases, including pneumonia, diarrhoea, malaria, HIV/AIDS, measles, tuberculosis and infections of the newborn. Infection poses a major threat to public health all over the world, but it disproportionately affects children in low- and middle-income...