Scientists have closed the case; human activity is causing the Earth to get hotter. How? Burning fossil fuels in one research that I found. When people extract and burn fossil fuels such as coal or petroleum, they cause the release of carbon dioxide (CO2) and other heat-trapping "greenhouse gases" into the atmosphere, as old and recent searches have found. Though natural amounts of CO2 have varied from 180 to 300 parts per million (ppm), today's CO2 levels are around 400 ppm. That's 40% more than the highest natural levels over the past 800,000 years, said by researchers. In another research by the (Intergovernmental Panel on Climate Change) IPCC in 2013, they announced the earth will get hotter over the next century. The IPCC's full and final findings on the state of the planet’s climate have been stated that limiting climate change will require ‘substantial and sustained’ reductions of greenhouse gas emissions. Kind of like what the last report I found was talking about. It says that atmospheric concentrations of greenhouse gases, already at levels not seen in at least 800,000 years, will persist for many centuries and ‘continued emissions of greenhouse gases will cause further warming and changes in all components of the climate system’. The IPPC report revealed that it is 'extremely likely' that human activity is the dominant cause for global warming. It claims a rise in temperature in the Northern Hemisphere will cause snow cover to decrease by 25 per cent by the end of the 21st century. Which is the age in time were in now. But the report failed to convincingly explain why the rise in global average surface temperatures had largely 'paused' over the past two decades.
But it concedes that world temperatures have barely risen in the past 15 years, despite growing amounts of greenhouse gases being pumped into the atmosphere.

Temperature rises have