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Scientists have created the first device to render an object invisible in three dimensions.
The “cloak”, described in the journal Science, hid an object from detection using light of wavelengths close to those that are visible to humans.
Previous devices have been able to hide objects from light travelling in only one [...]

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Take a huge oceanic catamaran, stick a hydroelectric turbine underneath it, and hitch it to a 6.5 million-square-foot parafoil flying nearly a mile in the air. That’s a Korean research team’s new proposal for generating gigawatts of clean energy.
As the parafoil pulls the boat, seawater would be forced through the [...]

A cunning plan to store energy underwater may help fulfil the promise of wind power
THE problem with wind power is that is cannot always be relied upon. The wind—and other transient, environmental energy sources such as solar—must either be used when it is harvested or stored expensively in batteries or specially [...]

As identity theft continues to rise, authorities are on the lookout for ways to use a person’s physical characteristics to distinguish between an imposter and the genuine article.
Whereas eyes change shape according to facial expression and ears can be hidden away, researchers from the University of Bath have discovered that [...]

“Green” mowers like the human-powered Mow Cycle are great for keeping that well manicured lawn along with a clear conscience.
But there’s always the chance of running into a patch of particularly thick grass that makes push mowers that little bit less attractive. The Momentum Reel Mower tackles this shortcoming in an [...]