Jet lag disrupts your body clock, causing tiredness and sleep issues during travel. Understanding its causes and remedies can ...

We're starting our ultimate guide with 11 mind-bending facts about the physics, psychology and history of time, plucked from the BBC Future archive.

But astronomer Dean Regas is not among them. As he says in the forward to his new "1,000 Facts About Space" book, new technologies now let us see the moon, stars, planets, asteroids, comets ...

To kick things off, here are some of the most fascinating facts we've learnt to ... tackling the big questions about time, including the science of time travel, how clocks have shaped humanity ...