As many parts of the world record their highest ever temperatures, and the art world begins to take more urgent action on the climate emergency, we look back on three interviews, from 2018 and earlier this year, focusing on climate change and the anthropocene. Olafur Eliasson, whose retrospective at Tate Modern has just opened, talks about his project Ice Watch and his climate activism, and another artist, Justin Brice Guariglia, argues that responding to the climate crisis is the moral imperative of our age. Finally, Anna Somers Cocks, the founder of The Art Newspaper, discusses the grave threat posed by rising sea levels to heritage in Europe and particularly around the Mediterranean.