Nobody has been able to trap electromagnetic waves inside a metamaterial and then release them again. Until now.
The world’s poor could benefit from a system that is blanketing half Earth’s surface with a signal that provides free access to Wikipedia and other useful websites.
Many gadgets will be able to understand images and video thanks to chips designed to run powerful artificial-intelligence algorithms.
Disruptive technological changes are at work but utilities are hamstrung by outdates business models and regulations.
The best of the rest from the Physics arXiv this week.
Going from Mad Men to Math Men. How technology has fundamentally changed the art and science of advertising.
A simple, cheap device turns sunlight into hydrogen fuel.
The greatest chess players are significantly more famous than their not-so-great contemporaries, by a margin that leads to a fame-predicting formula.
Classifying a painting by artist and style is tricky for humans; spotting the links between different artists and styles is harder still. So it should be impossible for machines, right?