Consumer & Gadgets

Why do smoke alarms keep going off even when there's no smoke?

Editor's note: MVS Chandrashekhar is a professor of electrical engineering at the University of South Carolina. In this interview, he explains how smoke detectors work and why they sometimes sound an alarm for what seems ...

Energy & Green Tech

Electric gains in battery performance

A high-performance version of the zinc-ion battery will enable stationary energy storage that promises to be cheaper, safer and more environmentally friendly than lithium-ion batteries.

Energy & Green Tech

What electric vehicle batteries will look like in the future

"Gigafactories" could one day be churning out millions of electric vehicle batteries in the UK. The government has already committed the country to a ban on selling new petrol- and diesel-engined cars by 2030, so it seems ...

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