Oldest Footprints in North America Found in Rock
- Details
- Published: Wednesday, 30 May 2018 15:35
Based on modern estimates, an active human will take more than 224,000,000 steps over a lifespan of 65 years based on an average of 9,448 steps per day. Most footprints that result from these steps are ephemeral, poorly defined and disappear quickly. In some cases, a distinct cast of the foot is left in soft sediments, preserving a representation of the foot and motion of the individual in solid rock.
