Cladding could regulate building temps by solidifying and liquefying

Seeking a passive way to keep buildings cool in hot weather and warmer in the colder months, researchers have developed a new electrochromic shape-shifting material. It switches from solid to liquid and from clear to opaque at set temperatures.

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Toroidal propellers: A noise-killing game changer in air and water

These strangely-shaped twisted-toroid propellers look like a revolutionary (sorry) advance for the aviation and marine sectors. Radically quieter than traditional propellers in both air and water, they're also showing some huge efficiency gains.

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Audi Activesphere e-SUV concept hides a pickup bed below its sportback

Audi is exploring a more rugged, adventure-ready breed of electric utility vehicle. The Activesphere concept is a more versatile multipurpose EV, combining a sport sedan's body, 4x4's high ground clearance, and pickup truck's gear-carrying utility.

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