2021 in climate change
This article documents events, research findings, scientific and technological advances, and human actions to measure, predict, mitigate, and adapt to the effects of global warming and climate change—during the year 2021. == Summaries == 26 February: The United Nations Synthesis Report on Nationally Determined Contributions under the Paris Agreement stated that "estimated reductions referred to in paragraphs (on greenhouse gas emissions) fall far short of what is required, demonstrating the need for Parties to further strengthen their mitigation commitments under the Paris Agreement".