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"Uber knows when your phone battery is running low because its app collects that information in order to switch into power-saving mode. But Chen swears Uber would never use that knowledge to gouge you out of more money. "We absolutely don't use that to kind of like push you a higher surge price, but it's an interesting kind of psychological fact of human behavior," Chen said. Uber's surge pricing uses a proprietary algorithm that accounts for how many users are hailing rides in an area at a given time. Customers are apparently less willing to believe that when the multiplier is a round number like 2.0 or 3.0, which seems more like it could have been arbitrarily made up by a human."

"I heard from one political dissident about a suspicious motorcycle parked in front of his London house. When the police checked it out, they found a wifi router connected to the bike's battery with the same name as his home's wifi. There's a name for this attack: "evil twin"."

"Jonga - the innovative township community alarm system launched by Mgiba and Shezi earlier this year - combines a wireless motion sensor with a six-month battery life and a 100-decibel siren with an Android app that sends text messages to five pre-selected contacts when the alarm is triggered."

"But it isn't. As I write, I have a Fairphone 3+ on the desk beside me. It's a very capable, nicely designed, dual-sim Android phone. In just seconds, I snap off the back of the case with a fingernail and remove the battery. Other modules of the phone, including the camera, can be removed and replaced without elaborate tools or expertise. And once it's done you snap the case shut and press the power button. And you can buy it online for £399. Over in the US, the Framework laptop has just come on to the market. It's a thin, lightweight, high-performance 13.5in notebook that can be upgraded, customised and repaired in ways that no other notebook can. It's even available as a kit of modules that users can change and assemble themselves, installing only the modules they want as plug-in units. Think of it as Lego for geeks."

"Nor are car owners the only consumers learning that software can be tricksy in a way hardware cannot. In 2017, Apple admitted that its software was slowing down the performance of older iPhones. It said that the design was aimed at saving battery life, but critics said it was an example of "planned obsolescence" - artificially shortening the life of a device to make buyers upgrade sooner. In 2009, Amazon provided a perfect metaphor for the potentially dystopian implications of the subscription economy when, without warning, it revoked copies of George Orwell's novel Nineteen Eighty-Four from all its Kindle e-readers."

"AI tool GNoME finds 2.2 million new crystals, including 380,000 stable materials that could power future technologies Modern technologies from computer chips and batteries to solar panels rely on inorganic crystals. To enable new technologies, crystals must be stable otherwise they can decompose, and behind each new, stable crystal can be months of painstaking experimentation. Today, in a paper published in Nature, we share the discovery of 2.2 million new crystals - equivalent to nearly 800 years' worth of knowledge. We introduce Graph Networks for Materials Exploration (GNoME), our new deep learning tool that dramatically increases the speed and efficiency of discovery by predicting the stability of new materials."

Energy storage has seen a new innovation from A123 Systems.