In laboratories from Brazil to Munich, researchers are learning to grab matter with sound alone, sculpting ultrasonic waves into invisible “hands” that can lift, push, and rotate objects without a ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Researchers have developed a novel device that couples magnetic fields and kirigami design principles to remotely control the movement of a flexible dimpled surface, allowing it to manipulate objects ...

When you walk, it’s the sidewalk that forces you forward. There is no such thing as centrifugal force. Rockets do not move because of the action-reaction law. While you sit reading this, your chair ...

Inspired by how brainless lifeforms such as starfish and slime moulds move around, physicists have constructed 'odd' objects that autonomously roll, crawl and wiggle over unpredictable terrain, ...

What do puzzles, gymnastics, writing and using maps all have in common? They all rely on people’s ability to visualize objects as they spin, flip or turn in space, without physically moving them. This ...