Study determines best arrangement of tidal sails device

In the long sprint to find new sources of clean, low-cost power, slow and steady might win the race—the slow-moving water of currents and tides, that is. Just as wind turbines tap into the energy of flowing air to generate ...

Venice completes first test of all flood barriers

Venice's long awaited flood defence system designed to protect the lagoon city from damaging waters during high tides on Friday survived a first test of its 78 barriers.

Egypt says Ethiopia dam mustn't reduce Nile's flow

President Mohamed Morsi Monday warned that Egypt would not allow its share of the Nile to be diminished by "one drop" after Ethiopia began diverting the Blue Nile as part of a giant dam project.

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