Life imitates art, and art imitates life
From the cradle to the grave, the small things that define every human life.
Part of the Fermi Paradox, the Great Filter is one of the explanations as to why intelligent alien life hasn't been discovered.
In settings where there are long established underworld thief, criminal and otherwise ne'er do wells there is going to be a system of heraldry associated with those who live in and rule from the shadows.
Why is magic used by so few when it is so much use?
Knowing is Half the Battle, red and blue lasers are the other half.
The plague of the Petroleum Era, the true bane of organized government
The first Renaissance was kickstarted by the Crusades and trade, the second Renaissance was fueled by a looming global crisis and international cooperation
A foundation 'Secret' of the Cosmic Era
The commericaly available firearms of the Cosmic Era
One of the events regularly overlooked in the history of the Cosmic Era is the Population Contraction that was concurrent with the Second Dark Age.
A re-evaluation of the basic concept of Man vs. Nature
In the art of several ancient kingdoms is was customary to stylize the monsters depicted. Even the most comely of elves would be drawn with too-pointed face and too-slanted eyes, to keep the up-standing human community of the kingdoms from thinking of the elves as being better than themselves.
It is easy to forget in our fast paced globally connected world what the reality of village life would have been like.
The races of Kuramen are a strange lot, descending down a long lineage from the First Race; prone to dramatic evolutions and born to a world divided, each does the best it can to survive.
In pretty much every single sci-fi there is one thing common for all the seemingly different faster-than-light drives.
Nano-technology - Not Sufficiently Advanced, as per the Arthur C. Clarke gold standard of sufficiently advanced technology.
"...a process of planetary engineering, specifically directed at enhancing the capacity of an extra-terrestrial planetary environment to support life. The ultimate in terraforming would be to create an uncontained planetary biosphere emulating all the functions of the biosphere of the Earth, one that would be fully habitable for human beings."
A brief list of warship types and their identification
A little way up the narrow valley, before they reach the woods, the PCs notice the squat, tumbledown buildings by the riverside. They are hardly big enough for a human to stand in, and the complex cogs and shafts that occupy the central cavity of one of the buildings are perplexing. What were these buildings? And how safe are they to explore?
Alternatively a desolate place is the perfect setting for a derelict chapel or croft. There needn't be any actual physical encounter involved, but it adds atmosphere to a place to see its dead history. For instance, in the Outer Hebrides there are whole deserted villages which were razed to the ground by the English during the Clearances. Such stories give a setting authenticity and character.