To improve drones, researchers study flying insects

The unmanned aircraft known as drones, used by hobbyists, researchers and industry to take aerial images and perform other tasks, are growing ever more popular—and smaller. But that miniaturization, which has produced drones ...

New whistle alerts bats to steer clear of wind turbines

Wind turbines are a critical component in the strategy for energy independence, but these massive structures are also killing bats. The U.S. Geological Survey estimates that the more than 52,000 wind turbines operating in ...

Improving drone performance in headwinds

The prevalence of multi-rotor drones has increased dramatically in recent years, but in headwinds, they pitch upwards unpredictably. Engineers from Tohoku University, Japan, have shown that angling the rotor blades of a quad-rotor ...

To maximize sugarcane harvesting, use the right blade

You wouldn't use the same knife to cut through a thick steak as you would to slice an angel food cake, right? Although that may be a ridiculous comparison, the same principle holds true when harvesting various crops. One ...

'Blade runner' legs give maimed Thai dog new lease on life

Just over a year after he was maimed for gnawing on someone's shoes, Cola is romping across a beach on new sleek paws: curved "blade runner" prosthetics modelled on those used by Paralympian sprinters.

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