Sperm caught breaking Newton’s third law of motion

Human sperm cells and a few microorganisms swim by deforming their our bodies in a method that breaks Newton’s third regulation of movement – and we’re nearer to understanding how they do it. The findings might ultimately encourage researchers to develop tiny robots that additionally violate this regulation as they swim.

Famously, Newton’s third regulation will be summed up within the phrase “for each motion, there may be an equal and reverse response”. Which means as you push in opposition to a wall, the wall pushes again on you. …