Genes flow from parents to children.
Memes flow from parents to children,
From preachers to their flock,
From teachers to their students,
Some flow back and forth,
And then some more.
Riding along: Genes and Memes.
The trace of the former is called the Tree of Life.
(Not really a tree: the Graph of Life ...)
Traces of the latter are found in the literature.
In both cases: Information Flows.
Giving rise to,
The Great Provenance Graph of Life on Earth, and:
The Biosphere's Tale (a Pale Blue Dot Production).