When we take a stroll on the beach, we walk on the sand without any trouble. The sand appears solid and is difficult to compress. When we put the same sand grains in an hourglass, they behave very ...

These phenomena appear to break the most fundamental rules of physics. Experiments revealed materials that flow against gravity, systems where cooling increases energy, and effects that challenge ...

New research published in Nature Physics details the relationship between a disordered material's individual particle arrangement and how it reacts to external stressors. The study also found that ...