On TikTok, Chinese manufacturers are advertising signal-blocking weapons with the breezy cadence of consumer lifestyle advertising. "Pew, pew, pew!" a woman wearing sneakers and high-waisted pink trousers says cheerfully in a video uploaded to TikTok. She is standing on what appears to be an industrial rooftop while demonstrating how to use a black device resembling an oversized laser tag gun. "Jamming gun, good," she adds, flashing a thumbs up. These days, nearly any product imaginable is available for purchase on TikTok straight from Chinese factories, ranging from industrial chemicals to mystical crystals and custom pilates reformers.

With its opposable thumb, multiple joints and gripping skin, human hands are often considered to be the pinnacle of dexterity, and many robotic hands are designed in their image. But having been shaped by the slow process of evolution, human hands are far from optimized, with the biggest drawbacks including our single, asymmetrical thumbs and attachment to arms with limited mobility. "We can easily see the limitations of the human hand when attempting to reach objects underneath furniture or behind shelves, or performing simultaneous tasks like holding a bottle while picking up a chip can," says Aude Billard, head of the Learning Algorithms and Systems Laboratory (LASA) in EPFL's School of Engineering. "Likewise, accessing objects positioned behind the hand while keeping the grip stable can be extremely challenging, requiring awkward wrist contortions or body repositioning." A team composed of Billard, LASA researcher Xiao Gao, and Kai Junge and Josie Hughes from the Computational Robot Design and Fabrication Lab designed a robotic hand that overcomes these challenges.

Fomi watches you work, then scolds you when your attention wanders. It's helpful, but there are privacy issues to consider. I've tested a lot of software tools over the years designed to block distractions and keep you focused. None of them work perfectly, mostly because of context. Reddit, for example, is something I should generally avoid during the workday, so I tend to block it--this is a good decision for me overall.

This work proposes a middle ground in the form of a scalable information-theoretic generalization of CCA, termed max-sliced mutual information (mSMI).

The OSSE NADIR and SWOT are pseudo-observations generated from the NEMO simulation.

The ocean is a crucial component of the Earth's system.