Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

“There’s one kind of program that we don’t understand – even in principle – and that’s an AGI. One day we will, but I see no sign of it at the moment and that’s pretty frustrating.” That’s the view of ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum world. However, the new theory remains far from being proven observationally.

The ball rolls across the floor because it was kicked, just as Earth orbits the sun because it is tugged by gravity. The connection between cause and effect is fundamental to how we understand the ...