International

Oldest human relative walked upright 7 mn years ago: study

AFP

The earliest known human ancestor walked on two feet as well as climbing through trees around seven million years ago, scientists said Wednesday after studying three limb bones.

When the skull of Sahelanthropus tchadensis was discovered in Chad in 2001, it pushed back the age of the oldest known representative species of humanity by a million years.

Nicknamed “Toumai”, the nearly complete cranium was thought to indicate that the species walked on two feet because of the position of its vertebral column and other factors.

However the subject triggered fierce debate among scientists, partly due to the scarcity and quality of the available bones, with some even claiming that Toumai was not a human relative but just an ancient ape.

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In a study published in the Nature journal on Wednesday, a team of researchers exhaustively analysed a thigh bone and two forearm bones found at the same site as the Toumai skull.

“The skull tells us that Sahelanthropus is part of the human lineage,” said paleoanthropologist Franck Guy, one of the authors of the study.

The new research on the limb bones demonstrates that walking on two feet was its “preferred mode of getting around, depending on the situation,” he told a press conference.

But they also sometimes moved through the trees, he added.

– ‘Not a magical trait’ –

The leg and arm bones were found alongside thousands of other fossils in 2001, and the researchers were not able to confirm that they belonged to the same individual as the Toumai skull.

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After years of testing and measuring the bones, they identified 23 characteristics which were then compared to fossils from great apes as well as hominins — which are species more closely related to humans than chimpanzees.

They concluded that “these characteristics are much closer to what would be seen in a hominin than any other primate,” the study’s lead author Guillaume Daver told the press conference.

For example, the forearm bones did not show evidence that the Sahelanthropus leaned on the back of its hands, as is done by gorillas and chimpanzees.

The Sahelanthropus lived in an area with a combination of forests, palm groves and tropical savannahs, meaning that being able to both walk and climb through trees would have been an advantage.

There have been previous suggestions that it was the ability to walk on two feet that drove humans to evolve separately from chimpanzees, putting us on the path to where we are today.

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However the researchers emphasised that what made Sahelanthropus human was its ability to adapt to its environment.

“Bipedalism (walking on two legs) is not a magical trait that strictly defines humanity,” paleontologist Jean-Renaud Boisserie told the press conference.

“It is a characteristic that we find at the present time in all the representatives of humanity.”

– Our ‘bushy’ family tree –

Paleoanthropologist Antoine Balzeau of France’s National Museum of Natural History said the “extremely substantial” study gives “a more complete image of Toumai and therefore of the first humans”.

It also bolstered the theory that the human family tree is “bushy”, and was not like the “simplistic image of humans who follow one another, with abilities that improve over time,” Balzeau, who was not involved in the research, told AFP.

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Daniel Lieberman, a professor of human evolutionary biology at Harvard University, said in a linked paper in Nature that the study’s “authors have squeezed as much information as possible from the fossil data”.

But he added that the research will not offer “full resolution” of the debate.

Milford Wolpoff, a paleoanthropologist at the US University of Michigan cast doubt on whether Toumai is a hominin, telling AFP that “extraordinary claims require extraordinary evidence”.

Wednesday’s study was carried out by researchers from the PALEVOPRIM paleontology institute, a collaboration between France’s CNRS research centre and Poitiers University, as well as scientists in Chad.

Guy said the team hopes to continue its research in Chad next year — “security permitting”.

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Chadian paleontologist Clarisse Nekoulnang said the team was “trying to find sites older than that of Toumai”.

International

Mexican influencer “La Nicholette” kidnapped in exclusive area of Culiacán

The content creator known as “La Nicholette,” also referred to as “La Muchacha del Salado,” was kidnapped Tuesday afternoon in Isla Musalá, one of the most exclusive residential areas of Culiacán, capital of the northern Mexican state of Sinaloa, according to local media reports on Wednesday.

The abduction was captured by the security camera of the young woman’s vehicle, a lilac-colored Tesla Cybertruck, which was later found abandoned at the scene.

Video footage circulating on social media shows a masked man carrying a long firearm preventing the influencer from entering her vehicle, while another individual forces her into a white sedan, reportedly an older-model Toyota Corolla.

According to media reports, the incident occurred at approximately 5:00 p.m. local time (2300 GMT) at the intersection of Tachichilte Avenue and San Esteban Street, within the Musalá residential area.

Authorities have not yet released official details regarding the victim’s whereabouts or the motives behind the kidnapping.

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International

Major winter storm to blanket U.S. and Canada with snow, ice and arctic cold

A major winter storm — the strongest of the season so far — is threatening large areas of the United States and Canada, bringing heavy snowfall, ice accumulation and an Arctic cold wave expected to affect millions of people, particularly toward the end of the week.

“A large winter storm will produce heavy snow, sleet and freezing rain from the southern Rockies through the Plains and the south-central region beginning Friday, then move eastward toward the East Coast by Sunday,” the U.S. Weather Prediction Center (WPC) warned.

The storm is expected to begin with intense snowfall in Colorado on Friday and spread eastward, leaving a wide snow band across Texas, Kansas, Missouri and Tennessee, before reaching the East Coast and impacting major cities such as Washington, Boston and New York.

According to the National Weather Service (NWS), temperatures could drop below -10°C (14°F) even in parts of the southeastern United States. However, the most serious concern is the wind chill, as strong winds accompanying the storm could drive perceived temperatures down to below -45°C (-49°F) in some areas.

Forecasters warn that these well-below-average temperatures could persist through the end of January and into early February, particularly across the Ohio Valley and parts of the East Coast.

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Snow accumulations are expected to exceed 15 centimeters (six inches) in cities such as New York and Washington, raising concerns about travel disruptions, power outages and hazardous conditions.

International

Trump announces preliminary NATO agreement on Greenland, suspends tariffs on Europe

The President of the United States confirmed that the agreement will be beneficial for all members of the Atlantic Alliance and has halted the trade sanctions previously threatened against Europe.

U.S. President Donald Trump announced on Wednesday from Davos, Switzerland, a preliminary agreement with NATO regarding Greenland, describing it as “very good for the United States and all NATO countries.” He also confirmed the suspension of tariffs that his administration had warned it would impose on eight European countries starting February 1.

In a statement published on his Truth Social platform, Trump said the agreement followed a productive meeting with NATO Secretary General Mark Rutte and establishes a framework for a future joint solution concerning Greenland and the Arctic region.

“This solution, if implemented, will be very beneficial to the United States of America and to all NATO countries,” the president stated, underscoring the strategic importance of the Danish autonomous territory, which has been at the center of heightened diplomatic tensions in recent weeks.

Trump added that the preliminary understanding also includes discussions related to the Golden Dome missile defense system, particularly in the context of Greenland. He noted that further details would be released as negotiations progress.

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As a result of the agreement, the administration suspended the tariffs it had previously announced against countries such as Germany, France and Denmark, which Trump had criticized for conducting military exercises on the Arctic island without prior coordination with Washington.

The president assigned Vice President JD Vance, Secretary of State Marco Rubio, and Special Envoy Steve Witkoffto lead the negotiations, stating that he will receive direct updates on their progress.

The announcement marks a new chapter in U.S.-European tensions over Arctic geopolitics, particularly regarding Greenland, a territory Trump has repeatedly expressed interest in acquiring for global security and strategic defense reasons.