One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline ...

Entropy increase is so universal that many physicists propose it is why we see time flowing. It is certainly why our hearts must constantly pump blood, supplying our cells with energy as a ...

The life table entropy values also indicated that it was becoming more difficult in the last three decades to increase the overall life expectancy. The lifespan inequality values suggested that ...

The flow of human civilization can be reconciled with the observation that biological life facilitates the increase of entropy. Imagine a bathtub drain: once the drain plug is pulled, the water within ...

Is time real, or is it merely a trick of human perception? Theoretical physicist Carlo Rovelli, a pioneer in modern physics ...