Goroka village in the Eastern Highlands Province of Papua New Guinea. Photo: Papua New Guinea Institute of Medical Research

New genetic analysis of people living in Papua New Guinea shows a sharp genetic divide between 10,000 and 20,000 years ago that was likely determined by whether their ancestors lived a more nomadic life in the highlands or a more sedentary one in the lowlands.

Why it matters: The genetic divide began at about the same time people began farming in the lowlands. In other parts of the world during the Bronze and Iron Ages, migration and innovations were the prime forces that shaped human evolution. But that doesn't seem to be the case in Papua New Guinea, where the transition to cultivating crops had the opposite effect. Study author geneticist Chris Tyler-Smith told Science that "is a big surprise."

How they did it: Researchers analyzed the genetic makeup of 381 people from 85 different language groups across Papua New Guinea, and also analyzed 39 genome sequences that had been previously generated from people there.

What it means: The researchers say the findings may indicate technological advances in the Bronze Age — not earlier agricultural ones — may have wiped out genetic groups in Europe, per Science.

Go deeper

47 mins ago - World

Jeremy Corbyn suspended by U.K. Labour Party over anti-Semitism report

Photo: Christopher Furlong/Getty Images

The U.K. Labour Party has suspended its former leader, Jeremy Corbyn, after a watchdog report found that the party failed to properly take action against allegations of anti-Semitism during his time in charge.

Why it matters: It represents a strong break by Keir Starmer, Labour's current leader, from the Corbyn era and one of the party's most persistent scandals.

U.S. economy sees record growth in third quarter

The U.S. economy grew at a 33.1% annualized pace in the third quarter, the Commerce Department said on Thursday.

The state of play: The record growth follows easing of the coronavirus-driven lockdowns that pushed the economy to the worst-ever contraction — but GDP still remains well below its pre-pandemic level.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Health: Large coronavirus outbreaks leading to high death rates — Coronavirus cases are at an all-time high ahead of Election Day — Fauci says U.S. may not return to normal until 2022
  2. Politics: Space Force's No. 2 general tests positive for coronavirus
  3. World: Taiwan reaches a record 200 days with no local coronavirus cases
  4. Europe faces "stronger and deadlier" wave France imposes lockdown Germany to close bars and restaurants for a month.
  5. Sports: Boston Marathon delayed MLB to investigate Dodgers player who joined celebration after positive COVID test.

Get Axios AM in your inbox

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Subscription failed
Thank you for subscribing!