Consumer & Gadgets

Is it safe to charge your phone overnight?

It's bedtime. You set your alarm, notice your phone is down to 23% battery, plug it in beside the bed and go to sleep. By morning, it's been connected to the charger for seven to eight hours—much longer than it needed to ...

Automotive

Asian carmakers besting US rivals at home, China poised to strike

Major U.S. automakers have watched their domestic market share shrink further as Asian competitors gain ground—a situation that may worsen if Chinese firms are able to enter the U.S. market, an idea floated by President Donald ...

Engineering

Solar cells gain efficiency by emitting light in fewer directions

Solar cells absorb sunlight and convert it into electricity. This process, however, is not perfect, and a large part of the solar energy is simply lost along the way. Some of it is lost as heat, while photons with insufficient ...

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