Complexity theorists sort problems into categories, called complexity classes, based on the resource demands of the best algorithms for solving them — that is, the algorithms that run fastest or use ...

A novel suggestion that complexity increases over time, not just in living organisms but in the nonliving world, promises to rewrite notions of time and evolution.

Making the decision to buy an EV shows how climate change and its solutions are complex systems. One tool that can help consumers navigate this complexity is an approach called systemic storytelling.

Without it, the earliest signals wouldn’t exist, and we’d be unable to look as far back through space and time as we can today. Here’s how quantum physics allows us to see so far back in ...

In general relativity, matter makes space-time bend, and space-time, in turn, guides how unconstrained matter will move. Because space-time is flexible, you can make it wave.