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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.
By Rafael OrtegaMember 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.
By Lucas MoreauResearchers 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.
By Ingrid Halvorsen
