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...carbon rather than lose it would help avoid dangerous climate change...[Man holds a handful of soil in a field with a spade behind him. ] Climate scientists anxious to find ways to limit atmospheric greenhouse gases have started to look at the ground beneath their feet. They calculate that although the world’s soils already hold 2.4 trillion tonnes of gases in the form...

...carbon emissions from older buildings: some opportunities and challenges...[Painting of a heritage building by Freya Wise] The need to retrofit Homes in the UK are responsible for around 18% of total UK carbon emissions and between 80-90% of the homes that will be in use in 2050 have already been built. Retrofitting existing buildings to reduce their energy demand and...

...footprint. It is very rare to find the track maker at the end of the trail, but this can be done. Alternatively, we can also estimate the hip height is typically about four times the length of the footprint. The Alexander formula These measurements can be added into a mathematical equation called the Alexander formula, which gives an estimate of speed. This formula...

...carbon cycle, and distinguish the terrestrial and marine parts of the cycle discuss the issues involved in concentrating, storing and transporting energy recognise which energy resources have a low energy density, and which have a high energy density...Energy resources: An introduction to energy resources: 1 Energy use - Until about 8000 years ago humans relied on hunting...