Name: Darwin visits a vanished Native American civilization in Oklahoma @StanEvolve
Uploaded: 2023-07-07T01:29:31-0400
Duration: 8 min 17 s
Description: At Spiro, Oklahoma, there is a little hump of dirt. It was once a big pyramid at one of the most important cities in the Native Mississippian culture, about 800 years ago. It was looted and dynamited in the 1930s.

Uploaded August 2023 | Updated September 2026, 1 week ago

Watch closely as you walk the forest path and what you think must be bird droppings might be slime molds, which emerge from the soil after rain.

Darwin and plants that look like pebbles

Darwin visits a vanished Native American civilization in Oklahoma