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.

Read and watch more from Time: The Ultimate Guide. 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.

Science, with its emphasis on public facts, gives us a model for answering many of the most important questions we face as a society. Adam Frank asks: Given our needs, tell me, what's the alternative?

Time passes faster for your face than for your feet (assuming you’re standing up). Einstein’s theory of relativity dictates that the closer you are to the centre of the Earth, the slower time goes – ...

The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a comet ...

There are some scientific issues that—despite overwhelming consensus among scientists—continue to be controversial among the public. There are a few reasons why these topics may vex people. Maybe it’s ...

Using vague language about scientific facts misleads readers Using subjective phrasing like "scientists believe" makes facts seem like opinions.

For those looking to pass the time during those extra hours of natural sunlight for reading, below TIME rounds up some surprising facts about the summer solstice and its history. The summer ...