International
Dinosaur tail found in Chile stuns scientists
AFP
Chilean paleontologists on Wednesday presented their findings on a dinosaur discovered three years ago in Patagonia which they said had a highly unusual tail that has stumped researchers
The remains of the Stegouros elengassen were discovered during excavations in 2018 at Cerro Guido, a site known to harbor numerous fossils, by a team who believed they were dealing with an already known species of dinosaur until they examined its tail.
“That was the main surprise,” said Alexander Vargas, one of the paleontologists. “This structure is absolutely amazing.”
“The tail was covered with seven pairs of osteoderms … producing a weapon absolutely different from anything we know in any dinosaur,” added the researcher during a presentation of the discovery at the University of Chile.
The osteoderms — structures of bony plaques located in the dermal layers of the skin – were aligned on either side of the tail, making it resemble a large fern.
Paleontologists have discovered 80 percent of the dinosaur’s skeleton and estimate that the animal lived in the area 71 to 74.9 million years ago. It was about two meters (almost seven feet) long, weighed 150 kilograms (330 pounds) and was a herbivore.
According to the scientists, who published their research in the journal Nature, the animal could represent a hitherto unknown lineage of armored dinosaur never seen in the southern hemisphere but already identified in the northern part of the continent.
“We don’t know why (the tail) evolved. We do know that within armored dinosaur groups there seems to be a tendency to independently develop different osteoderm-based defense mechanisms,” said Sergio Soto, another member of the team.
The Cerro Guido area, in the Las Chinas valley 3,000 km (1,800 miles) south of Santiago, stretches for 15 kilometers. Various rock outcrops contain numerous fossils.
The finds there allowed the scientists to surmise that present-day America and Antarctica were close to each other millions of years ago.
“There is strong evidence that there is a biogeographic link with other parts of the planet, in this case Antarctica and Australia, because we have two armored dinosaurs there closely related” to the Stegouros, said Soto.
International
Iran Rejects Negotiations With U.S. as Strait of Hormuz Remains Blocked Amid New Attack
Tensions remained high in the Strait of Hormuz on Monday after a vessel was hit by a projectile, despite U.S. President Donald Trump’s claims that negotiations with Iran were moving forward and that the strategic maritime route could reopen as early as Tuesday.
Tehran denied that direct talks were taking place, but Trump insisted that discussions were underway and described the situation as a final opportunity for Iran to reach an agreement.
“This is the last chance they have to sign a good document,” Trump told reporters at the White House, adding that the reopening of the Strait of Hormuz could happen “literally tomorrow” Tuesday.
The comments came after another escalation in rhetoric from Washington. Last week, Trump threatened Iran with military strikes before unexpectedly changing course on Sunday and announcing that negotiations with Tehran would resume.
Iranian Foreign Ministry spokesman Esmail Baqai rejected the U.S. president’s version of events, stating that Tehran was not holding negotiations with Washington.
“At this moment, we are not negotiating with the United States. We are negotiating with Oman to guarantee safe passage through the Strait of Hormuz,” Baqai said.
Earlier, the Iranian official said that Tehran was close to reaching an agreement with Oman, which lies across the Strait of Hormuz, to reopen the crucial waterway that plays a key role in global energy trade.
The maritime route has remained blocked by Iran since the outbreak of hostilities following U.S. and Israeli strikes against the Islamic Republic on February 28.
Meanwhile, Yemen’s Houthi rebels announced Tuesday that they had launched an attack against an airport in Saudi Arabia. The Iran-backed group had previously disrupted the passage of Saudi vessels through the Red Sea, an alternative route used for crude exports by the world’s largest oil producer.
The continued instability in the region has raised concerns over global energy supplies, as the Strait of Hormuz remains one of the most important chokepoints for international oil shipments.
International
Lula Launches Re-Election Campaign Amid Rising Tensions With Trump
Brazilian President Luiz Inácio Lula da Silva is set to be officially nominated for re-election by his Workers’ Party (PT), marking the start of his campaign for a fourth presidential term.
The nomination takes place during the party’s national convention in São Paulo, Brazil’s economic hub, where around 3,000 supporters gathered to back the veteran leftist leader.
“Today I’m here because Lula’s policies changed my life and my family’s. Thanks to him, we finally own a home after eight generations without one,” said Cristiane Rosa Julho, a 51-year-old social worker attending the event dressed in the PT’s signature red.
Seeking the presidency for the seventh time in his political career, Lula is expected to face Senator Flávio Bolsonaro in next year’s election.
The 45-year-old senator is the son of former far-right President Jair Bolsonaro, who has been jailed over his alleged role in an attempted coup following his defeat to Lula in the 2022 election.
The party convention opened with videos highlighting Lula’s social initiatives and speeches by four women praising his leadership, while supporters waved PT flags and held signs reading “We Want Lula as President” and “Brazil Is Not for Sale.”
The campaign begins amid growing tensions with the United States and President Donald Trump, a close ally of the Bolsonaro family who has openly backed several conservative candidates across Latin America.
Last week, Lula warned against foreign interference, declaring, “In Brazil, we do not accept anyone sticking their nose where it doesn’t belong.”
In July, the United States imposed two rounds of tariffs on Brazilian products, accusing the country of unfair trade practices. The measures followed earlier restrictions introduced in 2025, encouraged by Jair Bolsonaro’s son Eduardo Bolsonaro, in response to legal proceedings against the former president.
Lula has vowed to wage what he called a “war of truth against lies” in response to Washington’s pressure and accused Flávio Bolsonaro of undermining Brazil’s interests by allegedly helping the United States damage the country’s economy. The senator has denied the accusations.
The Brazilian president also claims Washington is attempting to influence the country’s political landscape in an effort to prevent his re-election.
International
Truck bomb attack near police station in Colombia leaves 14 injured ahead of presidential inauguration
A truck loaded with explosives exploded on Saturday near a police station in the Colombian city of Cúcuta, close to the Venezuelan border, leaving 14 people injured in an attack that occurred six days before president-elect Abelardo de la Espriella’s inauguration.
The blast took place in the early hours of the morning and was allegedly carried out by members of the National Liberation Army (ELN), who detonated a vehicle packed with explosives. According to the latest report from the Colombian Army, the attack injured 11 police officers and three civilians.
The explosion involved around 15 explosive devices, and two of the wounded officers are in critical condition and “fighting for their lives,” said William Villamizar, governor of Norte de Santander, the region where the attack occurred.
The incident comes amid Colombia’s worst wave of violence in the past decade, with armed groups expanding their presence in several areas of the country.
“I strongly condemn the cowardly terrorist attack carried out in Cúcuta against our National Police. Terrorism will not intimidate Colombia or break the determination of Colombians to live in peace and security,” De la Espriella said in a post on X.
The conservative lawyer, who has been described as a far-right figure, will take office on August 7, replacing Gustavo Petro, Colombia’s first left-wing president. The inauguration ceremony will be held in Cali, the country’s third-largest city and a frequent target of attacks by armed groups.
The United Nations condemned what it described as an “indiscriminate attack” that caused not only injuries but also “fear and distress among the population.”
De la Espriella has repeatedly warned about an alleged plot against his life. Meanwhile, President Gustavo Petro, who is currently visiting Cuba, has not commented on the attack. During his visit, Petro met with Cuban President Miguel Díaz-Canel to discuss what Havana describes as the United States’ “policy of suffocation” toward the island.
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