Olafur Eliasson on climate change and the threat to heritage. Plus, Art Basel in Miami Beach

We talk to the Danish-Icelandic artist about the urgent threat to the environment as his work Ice Watch, featuring chunks of glacier, go on show outside Tate Modern and Bloomberg’s HQ in London. We also discuss the potentially catastrophic effects of sea level rise to Mediterranean and European heritage with Anna Somers Cocks. And we talk to David Castillo, the Miami gallerist, as Art Basel makes its annual return to Florida.