Source: Wilkinson Microwave Anisotropy Probe - NASA
This is one of the most interesting maps I've seen to date. It is an infrared map of the early universe, taken by extremely sensitive microwave detectors on a space probe. This map shows the detailed history in the formation of our universe - as the microwave has been traveling through space for many years before being detected. It provides evidence that the big bang occurred and that the universe is expanding.
This is a graphic representation on all McDonald restaurants in the United States. Every McDonald restaurant is represented by a bright orange dot. This map is used for research and informational purposes; hence, the way in which the information is shown is unbiased. This map is interesting to me as an international student as it tells me about the demographics of United States. It clearly shows a higher density of McDonald restaurants in the eastern half of United States compared to the western half. This may be due to the higher population density in the eastern half of United States; it also means the people in the western half of United States will have to travel further to get to the nearest McDonald restaurant (or any other fast food restaurant) and this inconvenience may result in a healthier population in the western half of United States.
This map shows the world's distribution in the usage of nuclear power. Territory size shows the proportion of worldwide nuclear electricity production that occurs there. The way in which the information is presented makes this map very interesting as visual representation (through sizing of countries) is used in place of numbers. It allows us to get a complete picture of the situation easily.
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