But Gavassino took them on. The new study tackles these questions by focusing on the thermodynamic arrow of time — the familiar one-way direction in which events unfold, food spoils, and we all age.

The paradoxes of time travel are tied closely to thermodynamics, particularly entropy—the measure of disorder in a system. Entropy dictates the “arrow of time,” explaining why we remember ...

According to Sean Carroll, the most mysterious thing about time is its direction. This mystery arises from the fact that the known fundamental laws of physics are time-symmetric: by themselves ...