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

Two killed in shooting at restaurant near Frankfurt Airport

Two people were shot dead early Tuesday at a restaurant in Raunheim, near Frankfurt Airport, according to local police.

Preliminary findings indicate that an armed individual entered the establishment at around 03:45 local time (02:45 GMT) and opened fire on the victims, who died at the scene from their injuries.

The suspect fled and remains at large, while the motive behind the shooting is still unclear, German media reported. Authorities have launched a large-scale search operation.

International

U.S. counterterrorism chief resigns over opposition to war in Iran

Joe Kent, director of the National Counterterrorism Center, announced Tuesday that he has resigned from his post, citing his opposition to the ongoing war in Iran.

In a post on X, Kent said he could not, “in good conscience,” support the conflict, arguing that Iran did not pose an imminent threat to the United States. He also claimed that the war was driven by pressure from Israel and its lobbying influence in Washington.

In a resignation letter addressed to Donald Trump, Kent alleged that at the start of the current administration, senior Israeli officials and influential figures in U.S. media carried out a disinformation campaign that undermined the “America First” platform and fostered pro-war sentiment aimed at triggering a conflict with Iran.

Kent further stated that he could not support sending a new generation of Americans to “fight and die in a war that provides no benefit to the American people and does not justify the cost in American lives.”

Since the United States and Israel launched attacks against Iran on February 28, at least 13 U.S. service members have been killed, while 10 others have been seriously wounded and around 200 have sustained minor injuries, according to a report published by The Wall Street Journal.

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International

German president warns Iran war could spread and disrupt Strait of Hormuz

The president of Germany, Frank-Walter Steinmeier, warned Monday that the war involving Iran could expand and further disrupt shipping through the strategic Strait of Hormuz. He urged a swift end to hostilities between Iran, United States and Israel.

Speaking in Panama City during a joint appearance with Panamanian President José Raúl Mulino, Steinmeier said available information suggests Iran has significant capacity to disrupt maritime traffic through the key oil route.

“Iran has considerable potential to interfere with shipping through the Strait of Hormuz,” Steinmeier said through an interpreter. “We should therefore reach an end to the hostilities as soon as possible and call on all parties involved to make that happen.”

The remarks came during Steinmeier’s visit to Panama, the first by a German president to the Central American nation.

The German leader described the possibility of the conflict spreading as “very dangerous,” saying recent developments indicate that such a scenario cannot be ruled out.

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Over the weekend, U.S. President Donald Trump urged allied nations to help ensure safe passage for ships through the Strait of Hormuz after Iran moved to block the waterway in response to U.S. strikes. However, several allies—particularly in Europe—have shown little support for the proposal.

“Some are very enthusiastic, others are not, and some are countries we have helped for many years,” Trump told reporters at the White House. “We have protected them from terrible external threats, and they’re not that enthusiastic. And the level of enthusiasm is important to me.”

Meanwhile, Kaja Kallas, the European Union’s top diplomat, said the Strait of Hormuz falls “outside NATO’s scope” and stressed that “the war involving Iran is not Europe’s war.”