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25.7 x 19.8 cm ⏐ 10.1 x 7.8 in (300dpi)
ADAM NIEMAN / SCIENCE PHOTO LIBRARY ADAM NIEMAN / SCIENCE PHOTO LIBRARY
World carbon dioxide levels. Illustration of the volume of carbon dioxide (CO2) in the Earth's atmosphere. At room temperature and pressure all of the CO2 in the Earth's atmosphere would fit into a cube with sides measuring 116.92 kilometres. Here, a cube that size is shown on the same scale as a map of the UK. The blue portion of the cube is the amount of 'natural' CO2, that is the amount of CO2 the Earth has maintained in its atmosphere over millions of years. The red portion is the amount of CO2 that has been added to the atmosphere by man since the industrial revolution. Carbon dioxide is a greenhouse gas and its emission contributes to global warming.
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