With the invention of the leap year, the Julian calendar was used worldwide for over 1500 years. Over time, it led only to catastrophe.
It's simpler, more compact, and reusable from year-to-year in a way that no other calendar is. Here's both how it works and how to use it.
A sober look at a wild conspiracy theory that argues the Middle Ages never happened.
The Mayan calendar is revered for its impeccable accuracy. Now, a recent excavation in Guatemala reveals how the system developed over time.
Researchers speculate the famous monument was one of the world’s first solar calendars, possibly inspired by trade with ancient Egyptians.
Even with leap years and long-term planning, our calendar won't be good forever. Here's why, and how to fix it.
The best-laid plans of mice and everyone else.
Your brain is not an obsolete piece of technology. Once properly trained for learning, it’s your ticket to navigating the AI landscape.
We bake pies for Pi Day, so why not celebrate other mathematical achievements.
Leap years will only get us through the next few thousand years before we have to fix it. With every year that passes, we assume that two separate things will both […]
Perhaps it’s not just an oddly shaped hill, after all.
Unplugging only ignores the hard work of overcoming your distractions.
They had the technology. So why didn't they use it?
The Foo Fighters are at the dead center of the map, so all the other bands are happier, sadder, angrier, or hornier.
Most schools use a semester system, but a new study suggests that they should switch to quarters.
From emotional intelligence to problem solving, these management training topics will set team leaders up for success.
An influential series of books argues that the history of the world is the history of generations. Is it right?
Over the past 50 years, 27 leap seconds have been added to our time.
Glimpse into the ancient Maya empire through the writing of its own inhabitants.
The monsoon rains were not always so reliable.
These astounding inventions show that civilizations of the past were a lot more advanced than we might have thought.
We don't know what causes Miyake events, but these great surges of energy can help us understand the past — while posing a threat to our future.
The larger truth on the streets is that no one uses just one drug anymore.
With almost every shovel of sand shifted in Egypt, another artifact comes to light.