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...wellbeing of the community. The courses also provide another way of helping you to progress from informal to formal learning. Completing a course will require about 24 hours of study time. However, you can study the course at any time and at a pace to suit you. Badged courses are available on The Open University’s OpenLearn website and do not cost anything to study....

...health damages in southern China (Yang et al., 2013). Ironically, many REE are used for so-called ‘cleantech’ applications such as renewable energy or green transportation, moving us away from an economy driven by energy with a high carbon footprint, and because of this they are thought of as green. However, we have seen in this section that current REE production is...

...health. Table 1 shows typical percentages of the main constituents of the exhaust gas that emerges from a modern car engine. Table 1 The percentage by volume of the different gases in a typical car exhaust stream GAS VOLUME PER CENT nitrogen and argon 71.00 carbon dioxide 13.50 water vapour 12.50 carbon monoxide 00.68 oxygen 00.51 hydrogen 00.23 nitric oxide 00.11...

...Health Organisation says that 105 boys are born for every 100 girls, and in some countries the ratios are more extreme, for example up to 120 boys born for every 100 girls. You can visualise this by dividing the group into men and women. If the ratio is 105 to 100, then if there were 105 in the males group, there’d be 100 in the females group. Mathematically, you would...

...mentally compare with other distances in the Solar System!). In all sciences it is extremely important to state the units of any quantity. This is particularly true in astronomy, where the numbers can be very different if expressed in everyday units...Week 2: Planets, large and small: 3 Gas giants and ice giants - The outer regions of the four giant planets in the Solar...