evidence: Global temperatures have already increased by around 1.3C due to human activity. However, warming is not consistent across the planet – some regions have warmed significantly faster than others. The Arctic is a hotspot for global warming, and has seen local temperatures rise much faster than the global average in recent decades – a phenomenon known as Arctic amplification. [...] The graph shows that temperatures in the Arctic have warmed 3.8 times faster than the global average since the late 1970s. [...] The authors analyse trends over 1979-2021 because the observations are more accurate over this period, and because the late 1970s saw Arctic temperatures begin to rise rapidly. On average, the study finds that the planet as a whole warmed by 0.19C per decade, while the Arctic warmed 3.8 times faster – at 0.73C per decade.