Unless you live on Mars and even that without access to broadband, you’ll know that we’re nearing the End of the World. Or at least, that there are people who are willing to tell you that the ancient Mayan prophecies predict some kind of cataclysm on the winter solstice of this year: 21/12/12 – or if you live in those parts of the world that don’t work in ascending date order, 12/21/12.
It’s not true, of course, very few Apocalyptic prophecies are, but the truth is far more interesting, and while it takes several large volumes to explain it in detail, I’ll do my best to paraphrase it for readers of History Girls.

Even in its diminished form, the Maya were still a culture of astonishingly intricate and beautiful art, and quite mind-bendingly outstanding mathematics, astronomy and astrology. Not only had they defined the concept of zero long before it hit the west, they had a dual calendric system with which they had measured the length of a year to four decimal places: 365.2422 days .(Today, we define it as 365.242198 days – but it’s worth remembering that we only made the shift from the Julian to the Gregorian calendars in 1528, nine years after Hernan Cortez arrived and instigated the genocide of the natives – and the destruction of their culture.
Their two separate calendars were the relatively brief, ‘Short Count’ which measured in base 13 and was used to define the dates of rituals, births, harvests and the like, and the longer, base 20 ‘Long Count’ which measured lifespans.

Longer periods of astronomical time were measured by the Long Count calendar which measured time in exponential units, again arranged largely in bases 13 and 20. It’s the Long Count that gives us the world ages, so bear with me while I lay out the time frames.
1day= 1k’in
20 k’in = 1 uinal
18 uinal = 1 tun (360 days)
20 tun = I katun (7,200 days)
20 katun = 1 baktun (144,000 days)
13 baktun = 1 ‘World Age’ = 1,872,000 days or 5, 125.36 years.
So we have units of time that are ‘World Ages’ measured in 5,125 years, more or less.
The Mayan civilization may have arisen in 2600BC, but they set their calendar so that the end of the current World Age would coincide with certain astronomic events, namely the point when the rising sun on the winter solstice appears to overlay that part of the galaxy we term the ‘Dark Rift’ – an apparent gap caused by interstellar dust and gas cloud. The Maya called it Xibalbe be’ or the ‘Black Road’.

We know they did this because, in spite of the Jesuit’s best efforts, a number of Mayan monuments remain and scholars have spent the best part of the twentieth century decoding them. Almost everyone is agreed on the 3114 BC start date for the calendar and therefore the 21/12/12 end date – but nobody at all is sure exactly what the Maya imagined would happen now.
If we jettison into the realm of myth, we find that they believed there had been four previous world ages in which humanity had begun to flourish and that the human race had been largely obliterated at the end of each one as a consequence of a natural disaster involving one of the four elements: fire or storm or earthquake or flood. Myth (or rather, rumour loosely based on myth) says that the fifth – and current World Age would be ended by the actions of humanity and this would be an end to the Large World Age of 25,772 years.
So the upshot is, that the ancient Maya were capable of calculating an astronomical event that occurred once every 25,000 years and that astronomical event is taking place now, more or less.
If you want to believe that humanity is about to destroy itself, there’s plenty of evidence gathering to support that thesis, from the war in Syria, to the government’s current infatuation with fracking for shale gas (who needs a clean water supply anyway?) to the – in my mind more likely – immanent arrival of the technological singularity in which we create the computer – or at least, the chip – that is capable of designing and building its own successor. At which point, we’ll be out of the loop as far as the evolution of intelligence goes. And if I were a super-intelligent silicone-based life form and I looked at the mess the bipedal organic, carbon-based life forms had made of the planet, I’d have no hesitation at all in wiping them (us) out at the earliest opportunity. And yes, I am planning to write the book based on this concept. If we're all still here to read it.
Happy Solstice, everyone!
Images are from the book 2012: Everything you wanted to know about the Apocalypse (written by me, images from Transworld, courtesy of the ever-wonderful Phil Lord) There's one more to come, but I'm waiting for permission.