This play was inspired by "Ice Watch," a project by artist Olafur Eliasson in which huge blocks of ice were taken from Greenland, where climate change has melted them off the ice sheet. They were floating in the water, and were hauled to London to melt on the South Bank. Eliasson says the blocks "are individual, they are like beings, they whisper to you. If you put your ear to them, you can hear the air bubbles. And that air is fresh and clean - it has half the CO2 of the air outside."