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Computing

Greener Laptops

Hewlett-Packard is offering a faster-charging and longer-lasting lithium-ion battery for 18 of its laptop models. The underlying technology comes from startup Boston Power, of Westborough, MA, which completely redesigned the cells in these batteries–a process that involved changing their shape and chemistry. Where other lithium-ion batteries typically lose half their charging capacity in just one year, the Boston Power batteries retain 80 percent of their original charge after three years. They charge 50 percent faster too.

Courtesy of HP

Deep Dive

Computing

The future of open source is still very much in flux

Free and open software have transformed the tech industry. But we still have a lot to work out to make them healthy, equitable enterprises.

What’s next for the world’s fastest supercomputers

Scientists have begun running experiments on Frontier, the world’s first official exascale machine, while facilities worldwide build other machines to join the ranks.

The beautiful complexity of the US radio spectrum

The United States Frequency Allocation Chart shows how the nation’s precious radio frequencies are carefully shared.

How ubiquitous keyboard software puts hundreds of millions of Chinese users at risk

Third-party keyboard apps make typing in Chinese more efficient, but they can also be a privacy nightmare.

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Illustration by Rose Wong

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