In honor of the 4th of July, I offer this, from the great cartoonist R. Crumb.
Crumb drew "A Short History of America" in 1979. It shows an urban landscape gradually obliterating a single wilderness scene. Later, Crumb added three possible scenarios to the question posed in the final panel: "What Next?". He drew a "Worst Case Scenario - Ecological Disaster", a "fun-future" with technology on the rise, and an "Ecotopia" that has been described as a kind of hippie version of New Urbanism.
According to Denis Kitchen, the cartoon first appeared in Black and White in Co-Evolutionary Quarterly, and was later colored and arranged into a poster that was one of Kitchen Sink Press' best-sellers.
Here's a clip is from Terry Zwigoff's 1994 documentary, "Crumb".
CityKin posts the original 12 cartoons, plus the three additional ones.
You can purchase a poster at R. Crumb's website.