One hundred books being written that won’t be published for one hundred years

It’s an art project like no other, a project that won’t exist for a century. The Future Library was dreamt up by the Scottish artist Katie Paterson in the middle of a Norwegian forest. A hundred books, by a hundred authors, to be printed in a hundred years, using paper from trees which have only just been planted. We went to Oslo to see the saplings, which one day will become books.