Engineering

Solar cell keeps working long after sun sets

About 750 million people in the world do not have access to electricity at night. Solar cells provide power during the day, but saving energy for later use requires substantial battery storage.

Internet

Cesspool or civility? Elon Musk's Twitter at a crossroads

The discourse was never all that civil on Twitter. The loudest voices have often drowned out softer, more nuanced takes. After all, it's much easier to rage-tweet at a perceived enemy than to seek common ground, whether the ...

Business

Crypto clients beg for their cash back after lender's crash

An Irishman at risk of losing his farm. An American having suicidal thoughts. An 84-year-old widow's lost life savings: People caught in the meltdown of crypto lender Celsius are pleading for their money back.

Consumer & Gadgets

Amazon handed Ring footage to police without user consent

Amazon has provided Ring doorbell footage to law enforcement 11 times this year without the user's permission, a revelation that's bound to raise more privacy and civil liberty concerns about its video-sharing agreements ...

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