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The Hong Kong team behind celebrity humanoid robot Sophia is launching a new prototype, Grace, targeted at the healthcare market and designed to interact with the elderly and those isolated by the COVID-19 pandemic.

Going to eco-extremes to try and save the planet is a great thing to do, but for the majority of us, it’s not an easy thing to do. If everybody makes a few easy little changes to live more sustainably, it’ll have a far bigger impact. And with our range of affordable, everyday solutions, the power of change is in everybody’s hands. The difference isn’t going to be made with a few grand gestures, it’ll be when we all change a bit for good.

A Penn State scientist studying crystal structures has developed a new mathematical formula that may solve a decades-old problem in understanding spacetime, the fabric of the universe proposed in Einstein’s theories of relativity.

“Relativity tells us space and time can mix to form a single entity called spacetime, which is four-dimensional: three space-axes and one time-axis,” said Venkatraman Gopalan, professor of materials science and engineering and physics at Penn State. “However, something about the time-axis sticks out like sore thumb.”