The 450 ppm level is considered to be the point at which the world has a 50 per cent chance of avoiding dangerous climate change. (climatecrocks.com)
These methods aim to ensure that emission reductions are defined according to what science says is necessary for preventing dangerous climate change. (sciencebasedtargets.org)
With it the countries of the world have recognised that they all have to work together to tackle the shared problem of dangerous climate change caused by human activities. (sciencemediacentre.org)