Why UK is investing in 'miracle material' graphene

The UK government has pledged £50m towards developing spin-off technologies from the super-strong material graphene.

The announcement comes one year after two Manchester-based scientists were awarded the Nobel-prize for its discovery.

Graphene, the "miracle material" of the 21st Century, is so far the strongest material known to science, and is better at conducting electricity than copper.

Newsnight's Susan Watts reports.