The nature of time has plagued thinkers for as long as we've tried to understand the world we live in. Intuitively, we know what time is, but try to explain it, and we end up tying our minds in knots.

The concept of time feels so natural that we often forget just how peculiar it is. What actually is time? Figuring it out remains one of the trickiest problems in physics. Time governs our everyday ...

Time is all around us: in the language we use, in the memories we revisit and in our predictions of the future. But what exactly is it? The physicist and Nobel laureate Frank Wilczek joins Steve ...

Imagine time running backwards. People would grow younger instead of older and, after a long life of gradual rejuvenation – unlearning everything they know – they would end as a twinkle in their ...

Time is relatively well-described in current physical theories – it’s just that those descriptions are perplexingly at odds both with each other and with our perception of what time should be.

Time has evaded us all at one point or another. You might have overestimated how long dinner would take to cook, realized you’d planned to return a phone call hours ago or found yourself heading out ...

WE ARE BORN; we live; at some point, we die. The notion that our existence is limited by time is fundamental to human experience. We can’t fight it – and truth be told, we don’t know what we are ...