Nebelivka, a Ukrainian village of about 700 people, sits amid rolling hills and grassy fields. Here at the edge of Eastern Europe, empty space stretches to the horizon. It wasn’t always so.

This layout suggests a theory. Whether the people of Nebelivka knew it or not, this lower-density, clustered layout could have helped prevent any disease outbreaks from consuming the entire ...

Nebelivka, 35, UA temperature trend for the next 14 Days. Find daytime highs and nighttime lows from TheWeatherNetwork.com.

Nebelivka, a Ukrainian village of about 700 people, sits amid rolling hills and grassy fields. Here at the edge of Eastern Europe, empty space stretches to the horizon. It wasn't always so. Beneath ...