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
22:53 World Shipping lines agree voluntary slow zones on North Atlantic whale routes Member states of an international maritime body have backed seasonal slow-speed areas along whale migration corridors in the North Atlantic, asking ships to cut speed to 10 knots where humpbacks gather. Lucas Moreau
04:08 World Wrenhaven scientists join survey tracking giant iceberg off West Antarctica Researchers from the Wrenhaven Marine Institute are part of an international team following a newly calved iceberg roughly twice the size of the city as it drifts away from a West Antarctic glacier. Ingrid Halvorsen