Birds in flocks, bacteria and cells: In many collective systems, individual elements respond to only part of their surroundings, seemingly defying Newton's third law of motion—action equals reaction.

For years, a fringe theory challenging Isaac Newton’s Laws of Motion, known as Quantized Inertia (QI), has been used in an attempt to create a propellant-less engine. Now, the idea will get its ...

Like most high schoolers in an intro to physics class, Dan Hoek heard the legendary tale of Isaac Newton and the apple. Here's how the story goes. While resting beneath a tree, Newton watched an apple ...

Isaac Newton would never have discovered the laws of motion had he studied only cats. Suppose you hold a cat, stomach up, and drop it from a second-story window. If a cat is simply a mechanical system ...

Human sperm cells and some microorganisms swim by deforming their bodies in a way that breaks Newton’s third law of motion – and we’re closer to understanding how they do it. The findings could ...

Scientists have created a new kind of time crystal using sound waves to levitate tiny beads in mid-air. These particles interact in a one-sided, unbalanced way, breaking the usual rules of motion and ...