Causal Set Theory (CST) offers a compelling approach to reconciling quantum theory and general relativity by postulating that spacetime, at its most fundamental level, is discrete rather than ...

In the beginning, there was … well, maybe there was no beginning. Perhaps our universe has always existed — and a new theory of quantum gravity reveals how that could work. "Reality has so many things ...

Most lovers of science fiction are quick to tell you that there's a "time-honored" (pun intended) way to build a time machine - somehow get a wormhole and use it as a bridge to travel through time.

More often than not, recently popular structuralist interpretations of physical theories leave the central concept of a structure insufficiently precisified. The incipient causal sets approach to ...

The article on causal set theory was fascinating, and may even be the beginnings of a “theory of everything” (4 October, p 36). However, the one thing it did not address was the question on the cover ...

Fay Dowker promises to present a theory that may eventually reconcile science “with our deep sense of the reality of the passage of time” (4 October, p 36). I have to say that causal set theory, in ...