This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Most physicists doubt that time exists. On this page 40 years ago, we published scientific ‘proof’ of time being illusory. We pointed out that none of the equations of physics, from Newton’s laws to ...

Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

A comprehensive developer guide to implementing secure authentication in modern applications. Covers OAuth 2.0, OIDC, ...

New year, new bedding? Yes, please — and one of Britain’s premier textile houses is promising double the mileage this year. In its 2026 trends forecast, Christy predicted 'reversible versatility' will ...