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Calcium carbonate is an impressive material, in that it combines strength, light weight and porosity. Scientists have devised a new bacteria-based method of 3D-printing the substance, for use in applications such as bone repair and coral reef restoration.

First of all, this isn’t the first time we’ve heard about the 3D-printing of calcium carbonate objects.

Earlier approaches have involved extruding a gel containing mineral particles, which subsequently dries and hardens. Some of the resulting items have been rather soft and fragile, however, or they’ve shrunk as they dried, creating cracks and causing their shape to change.

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Armed with tools and repair guides from hardware repair advocacy firm iFixit, a user can remove and replace the phone’s back cover, battery, screen and charging port.

Adam Ferguson, head of product marketing at HMD Global, said that this process would cost on average 30% less than replacing an old phone with a new one.

Smartphone companies are increasingly working to make phones last for longer amid pressure from regulators to make electronics devices more sustainable.

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Was given test for Singapore students and failed.

The publication compared ChatGPT with students who have taken the PSLE in the past three years using questions from the latest collection of past year papers that are available in bookstores.

ChatGPT received a mere 16 out of 100 points for three math papers, 21 points for the science papers, and 11 out of 20 for the English papers.

The bot was limited in that it was unable to answer questions that involved graphics or charts, receiving zero points for those sections. It, however, performed relatively better in answering questions that it could attempt to solve and managed to answer more than half of the questions in the maths papers and a quarter of the science papers’ questions, which predominantly included graphs as part of the questions.

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Want to send your faraway lover a kiss? A Chinese contraption with warm, moving silicon “lips” appears to have just the answer.

The device, advertised as a way to let long-distance couples share “real” physical intimacy, is causing a buzz among Chinese social media users, who have reacted with both intrigue and shock.

Equipped with pressure sensors and actuators, the device is said to be able to mimic a real kiss by replicating the pressure, movement and temperature of a user’s lips.

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