It will include
- the fact of evolution and the immensity of time that preceded us
- the fact that we live on a planet in an incomprehensibly vast universe
- the urgent need for us to be environmentally responsible and a stress on the dire consequences of wasteful consumerism and an economic model built on it
- a sense of the importance of acceptance of differences among people and peoples
- the social, environmental, political and emotional benefits of gender equality
- ways to keep network power nodes in check
It sounds odd to say "coziness" but that's the nub of it. We all know or sense, more or less, the other stuff.
In the past, established power was supported by a "sacred" sanction such as the mandate of heaven or the divine right of kings that bounded the universe in tidy ways for us. But this support no longer exists or at least, where it does, it exists in a decadent form from which little good could emerge (and remains vehemently defended by people in thrall to a reaction formation).
So there's the challenge. To find a story so we feel at home 'on a planet', as opposed to 'in a world'.