Fracking protests continue to grow

It could be the solution to our energy problems - and it has government support, but protests against Fracking are growing. At Balcombe, in Sussex, police clashed with protesters as Cuadrilla began test drilling for gas - although fracking has NOT yet taken place at the site.

The process of splitting rocks to release gas is already widespread in the USA. And, as Jonathan Marland reports, it's causing controversy there too.