T-Rex: History's full of things that happened, and most of 'em happened on one day or another! Let's all get educated, as we explore...

T-Rex: TODAY
T-Rex: IN
T-Rex: HISTORY

Dromiceiomimus: What's today's fun historical fact, T-Rex?
T-Rex: Well! On THIS day in history, a tree fell in a forest in the Carboniferous period, which began around 285 million years ago! And since trees evolved MILLIONS of years before any tree-eating bacteria did, when trees died and fell over, they just stayed there, lying intact for centuries and centuries!

Utahraptor: This meant that a lot of carbon was taken out of the atmosphere and stored in these trees, yes?
T-Rex: ABSOLUTELY.

T-Rex: So much so, in fact, that it increased the proportion of oxygen in the atmosphere - 35%, compared to 21% it is today! And that higher oxygen content facilitated INSECT GIGANTISM, so if you're looking for an era in which trees don't decay and scorpions are as big as skateboards, may I recommend: HISTORY??

T-Rex: ...Later on, tree-eating bacteria evolved and oxygen levels dropped, so it was game over for the giant insects.
Off panel: I will mourn them later.
T-Rex: And I will mourn them not at all!!