Nostalgia has become a defining trait for Millennials and Gen Z-ers. However, this concept has roots beyond the present to ancient Greece.

Researchers have found the oldest known evidence of lead pollution dating to around 5,200 years ago in ancient Greece.

Ancient lead pollution in the Aegean Sea may have started 5,200 years ago — 1,200 years earlier than previously thought. Researchers analyzed sediment cores from land and sea, linking lead levels to ...