16:33 Technology Tidal turbine prototype starts generating in the channel off Fenwick Point The 500-kilowatt machine sits on the seabed and turns with the incoming and outgoing tides, and engineers will spend two years testing how it copes with strong currents. Rafael Ortega
23:38 Technology Solar panels raised above crops: first results from an Asher Valley trial A two-hectare trial near Bramley Cross that grows vegetables and soft fruit beneath raised solar panels has produced its first full season of data, with some crops doing better in partial shade. Samuel Adeyemi