Engineering

'Garbatrage' spins e-waste into prototyping gold

To Ilan Mandel, a Cornell robotics researcher and builder, the math didn't add up. How could a new, off-the-shelf hoverboard cost less than the parts that compose it?

Engineering

'PrivacyMic': For a smart speaker that doesn't eavesdrop

Microphones are perhaps the most common electronic sensor in the world, with an estimated 320 million listening for our commands in the world's smart speakers. The trouble is that they're capable of hearing everything else, ...

Consumer & Gadgets

Ditch the soundbar with new Amazon Echo speakers

Besides sporting a new round look, Amazon's updated fourth generation Echo speakers have something else going for them. Buy a pair for $200 and they make fabulous TV speakers.

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