Burning fossil fuels, cutting down forests and farming livestock are increasingly influencing the climate and the earth's temperature. This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming. Climate change impacts people inside their own countries, and usually creates internal displacement before it escalates leading people to cross borders. Therefore, UNHCR refers to 'persons displaced in the context of disasters and climate change' as this is more accurate.
Rk Naresh - Bunk. Try Tidal Pumping (gravity fields) from Sun out to Jupiter opening up our tectonic and spilling seismic heat into oceans. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4398306