This Synthesis Report repeats with greater certainty findings that have figured prominently in
earlier IPCC assessments, that the Earth's climate is warming «unequivocally,» that the
human influence in this process is «clear» and that the changing climate is very likely to bring impacts:» [w] ithout additional mitigation efforts beyond those in place today, and even with
adaptation, warming
by the end of the 21st century will lead to high to very high risk of severe, widespread, and irreversible impacts globally.»