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.

20260330_renta_mh_728x90

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.

20260330_renta_mh_728x90

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.

20260330_renta_mh_728x90

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.

20260330_renta_mh_728x90

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”.

20260330_renta_mh_728x90

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

International

Bill Gates to testify before Congress over Epstein connections

Bill Gates is set to testify on June 10 before a congressional committee in United States investigating links connected to the late sex offender Jeffrey Epstein, a source familiar with the matter told AFP on Tuesday.

The Microsoft co-founder is among several high-profile figures named in documents released by the Department of Justice, which detail alleged close associations, questionable financial dealings, and private photographs involving Epstein.

According to a spokesperson cited by Politico, Gates “welcomes” the opportunity to appear before the committee. The representative emphasized that Gates “never attended or participated in any illegal activities with Epstein” and is prepared to answer questions to support the investigation.

The Bill & Melinda Gates Foundation did not immediately respond to AFP’s request for comment.

In late February, Gates told members of his foundation’s board that his association with Epstein was a “huge mistake.” He has consistently denied any involvement in the financier’s criminal activities. Epstein died by suicide in prison in 2019 while awaiting trial on charges of sex trafficking minors.

20260330_renta_mh_728x90

“I did nothing illegal. I saw nothing illegal,” Gates said, according to a recording obtained by The Wall Street Journal.

Gates acknowledged that his relationship with Epstein began in 2011, three years after Epstein pleaded guilty to soliciting prostitution from a minor.

A draft email written by Epstein and released by the Department of Justice referenced alleged extramarital relationships involving Gates. The message, which was apparently never sent, claimed that Epstein had helped “Bill” obtain medication related to encounters with Russian women.

Gates admitted to having had two extramarital affairs but denied any involvement with Epstein’s victims.

20260330_renta_mh_728x90

International

Former Trump allies call for removal, cite 25th Amendment amid Iran threats

Former allies of U.S. President Donald Trump on Tuesday called for his removal from office, arguing he is unfit to continue in the role following recent threats to “wipe out an entire civilization,” made just hours before the deadline of his ultimatum to Iran.

One of the most prominent voices was former Republican congresswoman Marjorie Taylor Greene, who invoked the 25th Amendment of the U.S. Constitution as a mechanism to remove the president from power.

“25th Amendment! Not a single bomb has fallen on the U.S. We cannot annihilate an entire civilization. This is evil and insanity,” Greene wrote on social media platform X.

Greene, once a leading figure within Trump’s political movement during his first term, broke with the president last November over disagreements on foreign policy and his handling of controversial cases.

Another former supporter, controversial commentator Alex Jones, also raised the possibility of applying the constitutional provision during his show, in a conversation with attorney Robert Barnes.

Barnes explained that invoking the 25th Amendment requires the support of two-thirds of Congress, making it a more complex process than impeachment.

20260330_renta_mh_728x90

Section 4 of the amendment, ratified in 1967, establishes that the vice president, together with a majority of the cabinet, can declare the president unable to perform the duties of the office, a decision that must then be confirmed by both chambers of Congress.

The statements come amid rising international tensions and increasing domestic political pressure on the president.

International

Trump pauses strikes on Iran, extends ultimatum by two weeks

The president of the United States, Donald Trump, announced a temporary suspension of attacks against Iran for a period of two weeks, extending the ultimatum he had imposed on Tehran just hours before its deadline.

According to the president, the measure is conditional on Iran allowing the “full, immediate, and secure” reopening of the Strait of Hormuz. Trump stated that the decision would involve a reciprocal ceasefire between both parties.

The announcement was made through a message on his social media platform, where he emphasized that the pause in military actions is intended to create space for de-escalation in the region.

He also noted that the decision followed a conversation with the prime minister of Pakistan, Shehbaz Sharif, who requested a two-week extension of the ultimatum.

The move comes amid heightened global tensions, marked by escalating threats and concerns over the potential impact of the conflict on key international energy trade routes.