The Economist reports about research on quantum mechanics and the theory of relativity which suggests that causality is a dubious concept.
… it is no longer only location in space that becomes uncertain, but also location in time. Often, therefore, it would no longer be possible to say which of two events came first.
The Economist nicely discusses Einstein’s general theory of relativity. The article quotes John Wheeler’s dictum
Space-time tells matter how to move; matter tells space-time how to curve.
In a science brief, The Economist explains the conceptual advantages of Tegmark multiverses. They offer a resolution of the fine-tuning problem (see the chart) and of difficulties with the Copenhagen interpretation of quantum theory.