First broadcast: on BBC FourLatest broadcast: on BBC Four HD
Film telling the story of a Christmas tree through the 'voice' of the tree itself. The tree has big ambitions, doing everything it can to grow so tall that it reaches the sky. Show more
Three scientists go onto and into the Greenland ice sheet – further than anyone has travelled before – to find out how fast the ice is melting and gather the data that will help predict our future. Show more