The mathematics of graphs has helped reveal a principle that limits the strength of quantum correlations – and explains why ...

In a video posted on X, Madrid Mayor Jose Luis Martinez-Almeida urged city residents to minimise their journeys and stay where they were, adding: "It is essential that the emergency services can ...

In plants, animals and microbes genetic information is encoded by DNA, which are made up of sequences of building blocks, called nucleotide bases. These sequences can be separated into sections known ...