What if you held a tree long enough for it to grow around your hand? Giuseppe Penone explains the creation of his artwork ‘Continuerà a crescere tranne che in quel punto’ (‘It Will Continue to Grow Except at that Point’). His fascination with nature can be viewed through works in the exhibition ‘Thoughts in the Roots’, open at Serpentine South until 7 September. - Excerpts from video © Archivio Penone | Serpentine Galleries