If a theory doesn’t make a testable prediction, it isn’t science. It’s a basic axiom of the scientific method, dubbed “falsifiability” by the 20th century philosopher of science Karl Popper. General ...

Can a theory that isn’t completely testable still be useful to physics? What determines if an idea is legitimately scientific or not? This question has been debated by philosophers and historians of ...

Karl Popper's "principle of falsifiability" is one of the few philosophical ideas that physicists regularly mention. But science is far more complex than it suggests, says Robert P Crease As a ...

Where do you place the boundary between “science” and “pseudoscience”? The question is more than academic. The answers we give have consequences—in part because, as health policy scholar Timothy ...

It’s a basic principle of scientific practice that a new theory shouldn’t invoke the undetectable. Rather, a good explanation should be falsifiable – which means it ought to rely on some hypothetical ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...