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...free course, Earthquakes, you will look at why, where and what happens when they occur and also at how earthquakes are assessed qualitatively and quantitatively...Earthquakes shake the ground surface, can cause buildings to collapse, disrupt transport and services, and can cause fires. They can trigger landslides and tsunami in short, earthquakes can be very destructive....

...free course, Introduction to active galaxies, examines the different types of active galaxies and looks at the crucial role of the active galactic nucleus and the energy source at its heart...The field of active galaxies is recognised as one of increasing importance. But how do we know there are different kinds of galaxy? What are active galaxies? How are they powered?...

...free course, Unsolved problems in cosmology, you will learn about what the current unsolved problems are and about the possible ways in which they may be solved in the future...The science of cosmology has been very successful in explaining a wide range of observational evidence about the Universe, from the detailed properties of the cosmic microwave background radiation...

...free course will develop and improve your essential maths skills for work, study and everyday life. The course has four sessions, which cover the following topics: numbers, measurement, shapes and space, and handling data. There will be plenty of examples to help you progress, together with opportunities to practise your understanding...Have you ever noticed how often you...