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

Google says Australians could lose free search services

Google warned on Monday that the Australian government's plan to make digital giants pay for news content threatens users' free services in Australia and could result in their data being given to media organizations.

Business

US senators call for close look at TikTok

Leaders of the US Senate Intelligence Committee on Tuesday called for an investigation into whether Chinese officials are getting access to data about US users of video-snippet sharing sensation TikTok.

Business

Tesla holds 'Giga Fest' at disputed German factory

With a big wheel, music and an appearance by CEO Elon Musk, Tesla pulled out all the stops Saturday to win over opponents of the electric carmaker's controversial new "gigafactory" near Berlin.

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