Photos printed onto leaves using only sunlight. @wellcometrust @explorewellcome @photomonth @RGS_IBG 'Heliacal', St Augustines Tower, E5 0LY: 6-18th Oct, Tues-Sun, 12-5.30pm. Rare chance to see this internationally award winning work before it fades away forever... www.rachelsokal.com video of the whole body of work: http://www.youtube.com/watch?v=9FqtzGQLzds