It's ridiculous - we're investing in this place light years away that we don't even know if our species can survive on - After returning from a year-long Moon mission, Cassie, a NASA botanist, finds herself in a remote cabin in the woods, where her estranged twin sister, Stella, a former NASA architect, has found a new life with climate activist Bryan. Old wounds resurface as the sisters attempt to pick up the pieces of the rivalry that broke them apart. Walden by Amy Berryman premieres at the Harold Pinter Theatre, London, in May 2021, as part of the RE:EMERGE season.