Why Do So Many People Have the Same Small Scar? The Mystery Behind a Global Mark

scar. Because the same technique was used on millions of people, the marks often look nearly identical.

For older generations, this scar became a normal part of life. Younger people, however, often do not have it, since routine smallpox vaccinations ended decades ago.

In the end, that small mark is not a mystery at all. It is a quiet reminder of a global continue reading …