Introduction
Climate change refers to significant, long-term changes in the global climate.
The global climate is the connected system of sun, earth and oceans, wind, rain and snow, forests, deserts and savannas, and everything people do, too. The climate of a place, say New York, can be described as its rainfall, changing temperatures during the year and so on.
But the global climate is more than the “average” of the climates of specific places.
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The total mass of animals in the oceans is declining and this affects fishing potential.
Sea level rise is accelerating. If it now rises at a rate of 3.6 millimetres a year, scientists estimate that the rate would increase fourfold by the end of the century.
Phenomena such as extreme sea heights in certain places will be increasingly recurrent. This may cause some countries to become uninhabitable.
The earth's oceans, ice and snow are being seriously transformed by global warming.
Glaciers will lose more than a third of their mass as a result of greenhouse gas emissions, reducing the water supply for the people who depend on it.