Tilting at Water Turbines

A collection of weird and wonderful devices designed to harvest energy from the ocean.

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Europeans Reignite Fusion Energy Project

The test of a new lining that can take the heat of fusion could be crucial for a planned reactor in France.

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Printing Parts

Systems that print mechanical components with metal ­powder could be used to build lighter, more efficient airplanes.

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Carmakers Unveil New Types of Hybrids

Alternative approaches replace the battery with compressed air or a flywheel.

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Printing Parts

New printing methods make it possible to create complex, durable parts for airplanes.

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Printing Parts

Systems that print mechanical components with metal ­powder could be used to build lighter, more efficient airplanes.