1. Seth Conway

Solar power runs Met Office supercomputer

The largest supercomputer in the UK is now being run on solar power generated electricity. It requires the biggest array of roof top panels to be found in the West Country. It will generate enough power for 67 homes.

The computer it will power at the Met Office in Exeter predicts the effects of climate change. Weather bosses say it's a business decision but it comes after much criticism of the agency for its own carbon footprint. Seth Conway reports.