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...carbon dioxide. Further from the Sun the cocktail of ices on the moons gets richer, which is another reason why this sort of ice behaves like rock does within the Earth. Then we’ll look at craters. Craters are really interesting. On our Moon - like on other moons - we’ve learned that they have been formed as the result of large meteorite and comet impacts. In the...

...carbon-based molecules such as proteins and nucleic acids. As an ardent materialist I am not aware of evidence to support the vitalist view that living things incorporate some ingredient which prevents them being explained in purely physical and chemical terms. So if silicon, metal and complex circuitry were to generate an emotional repertoire equal to that of humans, why...

...carbon and oxygen. Chlorine, bromine, sulfur and phosphorus are also non-metals. Living organisms are made of mainly non-metallic elements. Scientists have tended to formalise the characteristics of metals (as distinct from non-metals) by suggesting that metals are dense, lustrous (shiny), good conductors of heat and electricity and can be shaped by physical forces....

...the animation. So where do we go from here? Now we've seen something of what data is available, and how we can start to visualise it, we can start to explore some of the issues surrounding international development, from population growth to GDP, mortality rates to carbon emissions. So with chart types in mind, and data to find, let's move on to Looking at Population Data...