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
Federal immigration agents kill man in Minneapolis, sparking protests and outrage
Federal immigration agents shot and killed a 37-year-old Minneapolis man during an operation on Saturday, authorities confirmed, sparking new protests and deepening outrage over federal immigration enforcement in the city.
The victim, identified as Alex Jeffrey Pretti, was a U.S. citizen and intensive care nurse who worked at a Veterans Affairs hospital and was widely respected in his community, according to colleagues and news reports.
Officials said the shooting occurred during a targeted immigration raid in south Minneapolis. The Department of Homeland Security (DHS) described the incident as an act of self-defense by agents who believed the man posed a threat.
However, videos reviewed by multiple outlets and eyewitnesses show Pretti holding a phone and not displaying a weapon before being pepper-sprayed, tackled by agents and then shot multiple times, raising serious questions about the official account.
The killing comes amid a broader federal immigration enforcement operation in the city and follows another controversial shooting in early January in which Renée Good, a 37-year-old U.S. citizen, was fatally shot by an ICE agent, leading to widespread protests and criticism of federal tactics.
International
Delcy Rodríguez seeks political agreements after Maduro’s ouster
Venezuela’s interim president, Delcy Rodríguez, on Saturday called for “reaching agreements” with the opposition to achieve “peace” in the country, which the United States says it now controls following the military operation that removed President Nicolás Maduro from power.
Rodríguez, who previously served as Maduro’s vice president, assumed interim leadership after the leftist leader was captured on January 3 during a military incursion that left nearly 100 people dead.
In her first public statements since taking office, Rodríguez signaled a shift in the strained relationship between Caracas and Washington, while also committing to the release of a “significant number” of political prisoners.
“There can be no political or partisan differences when it comes to the peace of Venezuela,” Rodríguez said during an address in the coastal state of La Guaira, broadcast on state television VTV.
“From our differences, we must speak to one another with respect. From our differences, we must meet and reach agreements,” she added.
The day before, Rodríguez instructed the head of Parliament — her brother Jorge Rodríguez — to convene talks with various political sectors in the country aimed at achieving “concrete and immediate results.”
International
Bogotá and Quito Seek Dialogue After Tariffs and Power Cut Escalate Tensions
Bogotá and Quito will hold an emergency bilateral summit next week amid recent developments that have strained relations between the two countries.
Tensions escalated this week after Ecuadorian President Daniel Noboa unexpectedly announced a 30% tariff on Colombian imports. Colombia responded with a reciprocal measure, imposing the same tariff on around 20 Ecuadorian products and suspending electricity exports to Ecuador.
Aware that electricity imports are critical to easing Ecuador’s recent energy crises, Quito further imposed a 30% tariff on the transportation of Colombian oil through its territory.
However, recent statements from the Ecuadorian government suggest that dialogue between the two sides has intensified in recent hours. Ecuador’s Minister of Foreign Affairs, Gabriela Sommerfeld, confirmed that active conversations are under way.
In Colombia, segments of the business sector have welcomed the prospect of negotiations. The National Business Council (Consejo Gremial Nacional, CGN), for instance, urged both governments to restore commercial relations, warning that the dispute “puts jobs and regional economic stability at risk.”
Federal immigration agents kill man in Minneapolis, sparking protests and outrage
Delcy Rodríguez seeks political agreements after Maduro’s ouster
Bogotá and Quito Seek Dialogue After Tariffs and Power Cut Escalate Tensions
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
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Extension of the state of emergency approved in southern Chile
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