The Earth’s atmosphere keeps our planet’s temperature fairly constant. It suffers far less from extremes of temperature than our moon or other planets in the solar system. Life on Earth is dependent on this stability, but the Earth's climate is changing.
Our atmosphere consists of 78% nitrogen, 21% oxygen, and less than 1% carbon dioxide with the rest being made up of water vapour and other tiny amounts of other gases. The gases exist in perfect proportions to sustain life on Earth: oxygen for animals to breathe and carbon dioxide for plants to photosynthesise. They help to stabilise the planet’s temperature and absorb the harmful rays of the sun.
Environmental scientists have been aware of the fragility of this atmosphere for many years. It is only in recent years that world leaders have acknowledged the extent of the damage caused by modern society and industrial processes and the effect of greenhouse gases on our climate.