This poster is pretty impressive, crunching all of time from the Big Bang to Today into a normal-sized, 18" wide x 24" tall poster. The poster is G-rated, so it's classroom- and kid-friendly.
This is a poster of our original post, Putting Time in Perspective. You can also find a poster of the prettier, more bare-bones version of our post, made by Visual.ly, and a long, skinny version of this poster, on the poster home page.
This original Wait But Why poster is printed on acid-, lignin-, and chlorine-free paper that is also pH buffered with calcium carbonate for a true archival sheet.
Measurements are taken of the front of the shirt. For example, a Men's Small says Chest = 18", which means it measures 18" from left to right of the front of the shirt. The full shirt circumference = 36" (front and back combined).