The world is in a growing climate emergency that requires immediate action. With global greenhouse gas emissions rapidly increasing, our fast-warming world is already experiencing major disruptions from more intense droughts, fires, heatwaves, floods, destructive tropical cyclones and other extreme events. Climate science has now attributed the rising intensity of observed extreme climatic events to human influences. We have demonstrated that greenhouse-gas emissions have intensified heatwaves and mortality across all continents. We have the evidence that global warming has increased the flooding risk of intense hurricanes across the Caribbean and the southeast of the United States, as well as typhoons across the western Pacific. We know that human influences have increased both observed droughts and extreme precipitation events on all continents.