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The terrifying time our early ancestors almost became extinct
The terrifying time our early ancestors almost became extinct
New research has shown that our early ancestors almost went extinct some 900,000 years ago. Using a new method called FitCoal (fast infinitesimal time coalescent process), researchers analysed the likelihood of present-day genome sequences to project current human genomic variation backwards in time. They applied the technique to the genomes of 3,154 people from 10 African and 40 non-African populations, and found a massive crash in genetic diversity during the transition between the early and middle Pleistocene. “Results showed that human ancestors went through a severe population bottleneck with about 1,280 breeding individuals between around 930,000 and 813,000 years ago,” the study authors wrote in the journal Science. “The bottleneck lasted for about 117,000 years and brought human ancestors close to extinction,” they say. Wiping out roughly 98.7 percent of the ancestral human population, “the bottleneck could also have increased the inbreeding level of our ancestors, thus contributing to the 65.85 percent loss in present-day human genetic diversity,” explained the researchers. This probably happened because of changes in the global climate as short-term glaciations became longer-lasting, triggering a drop in ocean temperatures, prolonged drought, and the loss of large numbers of species that humans might have relied on for food. Then, around 813,000 years ago, populations finally recovered, with a 20-fold increase in numbers because of fire combined with the return of warmer temperatures, researchers reckon. What a near miss, eh? Sign up to our free Indy100 weekly newsletter Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.
2023-09-03 19:55
Giants right-hander Alex Cobb carries no-hit bid into 7th inning vs Reds
Giants right-hander Alex Cobb carries no-hit bid into 7th inning vs Reds
San Francisco right-hander Alex Cobb carried a no-hit bid through seven innings against the Cincinnati Reds with the help of a scoring change
2023-08-30 11:46
Who is Tyler Cherry? Biden official sparks controversy after old posts attacking police resurface online
Who is Tyler Cherry? Biden official sparks controversy after old posts attacking police resurface online
The White House declined to offer any statement regarding Tyler Cherry's controversial online history, which includes comments about law enforcement, racial bias, etc
2023-10-08 17:18
Travis Barker's daughter Alabama Barker's new look leaves Internet confused: 'Is that your natural hair?'
Travis Barker's daughter Alabama Barker's new look leaves Internet confused: 'Is that your natural hair?'
In a clip she uploaded, Alabama Barker, 17, is seen flipping her hair from right to left as she checks herself out in the mirror
2023-07-04 14:52
The Angels said they won't trade Shohei Ohtani, and he celebrated with a 1-hitter and a HR
The Angels said they won't trade Shohei Ohtani, and he celebrated with a 1-hitter and a HR
Shohei Ohtani is staying with the Los Angeles Angels, at least for the rest of the season
2023-07-28 05:25
Internet calls Kylie Jenner out for copying Mario Dedivanovic's palette after Classic Matte palette release: 'Just name it Make Up By Kylio'
Internet calls Kylie Jenner out for copying Mario Dedivanovic's palette after Classic Matte palette release: 'Just name it Make Up By Kylio'
Kylie Jenner's new campaign is different from her previous ones as it features close-up shots of her face alongside the palette and glosses
2023-07-13 11:18
Myanmar violence, sea feud are tough challenges for ASEAN
Myanmar violence, sea feud are tough challenges for ASEAN
Alarm over Myanmar’s still-unfolding deadly civil strife, including an armed attack on an aid convoy, and China’s aggressive actions in the disputed South China Sea are expected to challenge Southeast Asian leaders’ commitments to non-interference and consensus decision-making as they meet in Indonesia this week
2023-05-09 20:47
A look at what to expect as latest UN climate talks get under way in oil-rich UAE
A look at what to expect as latest UN climate talks get under way in oil-rich UAE
The Middle East plays host to its second straight U.N. climate conference over the next two weeks, with countries hoping to agree on new ways to keep the planet from catastrophic heating by the end of the century
2023-11-30 13:27
Trump targets 2024 Hispanic vote as rivals gather for Miami debate
Trump targets 2024 Hispanic vote as rivals gather for Miami debate
By Nathan Layne and James Oliphant Donald Trump, the frontrunner for the Republican presidential nomination, will stage a
2023-11-08 19:15
Jay Monahan to return to PGA Tour commissioner role after month break
Jay Monahan to return to PGA Tour commissioner role after month break
PGA Tour Commissioner Jay Monahan is returning to work
2023-07-08 07:19
Hundreds storm airport in Russia in antisemitic riot over arrival of plane from Israel
Hundreds storm airport in Russia in antisemitic riot over arrival of plane from Israel
Hundreds of people have stormed into the main airport in Russia’s Dagestan region and onto the landing field, seeking passengers arriving from the Israeli city of Tel Aviv
2023-10-30 15:49
UN envoy calls for a 'unified mechanism' to lead reconstruction of Libya's flood-wrecked city
UN envoy calls for a 'unified mechanism' to lead reconstruction of Libya's flood-wrecked city
The United Nations’ top official in divided Libya has called for a unified mechanism to lead the reconstruction a coastal city that was wrecked by devastating floods last month
2023-10-03 05:24