A major population decline that affected parts of northern Europe more than 5,000 years ago may finally have an explanation, according to new research. Scientists studying a prehistoric burial site near Paris say entire communities appear to have disappeared, leaving behind a demographic gap later filled by new groups from other regions. A sudden break in history The … [Read more...] about Entire Human Populations Vanished 3,000 Years Ago. Scientists Figured Out Where They Went.