
Deep Time
Sixteen intervals of Earth's history, each rated by how long an unequipped human would last in it. Oxygen is the filter for four billion years; food is the filter after that.
earth sciencedata visualisationinteractive
Self-contained sites that make one argument about one subject. Not tools, not posts: built to be opened and messed with.

Sixteen intervals of Earth's history, each rated by how long an unequipped human would last in it. Oxygen is the filter for four billion years; food is the filter after that.