HealthLong covid: What we now know about its causes and possible treatments Almost four years after the first cases emerged, we are accumulating evidence about the physiology behind this complex condition – from microclots to viral persistence Features
PhysicsA second big bang? The radical idea rewriting dark matter’s origins The enduring mystery of dark matter has led some physicists to propose that it was forged in a distinct moment of cosmic creation, potentially transforming our view of the early universe Features