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

FBI Warns of Possible Iranian Drone Attack on U.S. West Coast

The Federal Bureau of Investigation (FBI) has warned police departments in California about a possible Iranian plan to carry out a drone attack against the west coast of the United States, according to a report published Wednesday by ABC News.

The warning was issued through a memorandum sent to agencies participating in a Joint Terrorism Task Force, outlining the possibility of a surprise attack involving unmanned aerial vehicles launched from a vessel off the U.S. coastline.

According to the document, intelligence suggested that in early February 2026 Iran may have considered an attack against unspecified targets in California if the United States carried out airstrikes on Iranian territory.

However, the memo also noted that authorities lack additional details about the timing, method, specific targets, or individuals responsible for the alleged plan.

Reports cited by U.S. media indicate that the alert coincided with the start of a military offensive by the administration of Donald Trump against the Iran, a development that has heightened tensions across the Middle East.

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Law enforcement sources with counterterrorism experience told the Los Angeles Times that the warning is part of a routine precautionary advisory based on information from the U.S. Coast Guard.

The sources emphasized that there is no credible indication of an imminent attack and no evidence that Iran currently has the capability to successfully carry out such an operation.

California is home to the largest Iranian community in the United States. According to the Migration Policy Institute, more than half of Iranian immigrants in the country lived in the state in 2019, including around 140,000 people in Los Angeles County alone.

The city also hosts a neighborhood widely known as “Tehrangeles,” where a large Iranian community began settling in the 1960s and continued to grow following the Iranian Revolution.

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International

Trump Says Iran Is Welcome at 2026 World Cup but Warns of Security Concerns

The President of the United States, Donald Trump, said Thursday that the national football team of Iran is “welcome” to participate in the 2026 World Cup, although he suggested it might be safer for the team not to take part in the tournament.

“The Iranian national soccer team is welcome at the World Cup, but I really don’t think it’s appropriate for them to be there, for their own safety,” Trump wrote on his social media platform Truth Social.

His comments came a day after Iran’s sports minister, Ahman Donyamali, said that there are currently no conditions for the country to participate in the tournament following the killing of Iran’s Supreme Leader, Ali Khamenei, during a military offensive launched on February 28 by Israel and the United States.

“After the corrupt government killed our leader, there are no conditions that allow us to take part in the World Cup,” the Iranian official said. He added that the country has faced two wars in the past eight or nine months, resulting in thousands of civilian deaths, making participation in the tournament unlikely.

On Tuesday, the president of FIFA, Gianni Infantino, met with Trump at the White House.

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Following the meeting, Infantino said that Trump reiterated that Iran’s national team would be allowed to compete in the FIFA World Cup 2026.

“We discussed the current situation in Iran and the fact that the Iranian team has qualified to participate in the FIFA World Cup 2026. During the conversation, President Trump reiterated that the Iranian team is, of course, welcome to compete in the tournament in the United States,” Infantino wrote on Instagram.

International

Iran issues threat to Trump as conflict escalates over Strait of Hormuz

The head of Iran’s Supreme National Security Council, Ali Larijani, threatened U.S. President Donald Trump on Tuesday, warning him to “beware of being eliminated.”

The Republican president had warned on Monday that he would strike Iran “very hard” if the Islamic Republic blocked oil shipments through the Strait of Hormuz, which has effectively been closed since the war began eleven days ago.

“Iran is not afraid of your empty threats. Others more powerful than you tried to destroy the Iranian nation and failed. Beware that you are not eliminated,” Larijani wrote on X.

Earlier, Iran’s Revolutionary Guards — the ideological military force of the Islamic Republic — also said their forces would move to block oil exports from the Gulf.

Meanwhile, Israeli Prime Minister Benjamin Netanyahu said Israel’s military offensive against Iran is far from over.

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“Our aspiration is that the Iranian people free themselves from the yoke of tyranny; ultimately, that depends on them. But there is no doubt that with the measures taken so far we are breaking their bones, and we are not finished yet,” Netanyahu said in a statement.