New Scientist: Surfers, bodyboarders and dolphin-spotters at the English seaside resort of St Ives were mostly unaware of a techno drama being played out about a kilometre beyond the breakers this month. Since 1 August, engineers on the cable ship Nordica have been trying to begin deployment of Wave Hub, an undersea extension cord that could make harnessing wave energy more viable. The first part of the roll-out hasn’t gone at all smoothly, however. So just what is Wave Hub? Essentially, it’s a …