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
Ukraine declares nationwide energy emergency amid russian attacks and extreme cold
The Ukrainian government on Wednesday declared a nationwide energy state of emergency amid continued Russian military attacks and extreme winter weather, with nighttime temperatures dropping as low as minus 18 degrees Celsius.
“The consequences of Russian attacks and worsening weather conditions are severe (…) Overall, a state of emergency will be declared for Ukraine’s energy sector,” Ukrainian President Volodymyr Zelensky said in a statement posted on social media following a meeting with senior officials.
Zelensky announced the creation of a “permanent coordination headquarters” to manage the crisis in the capital, Kyiv, and tasked former defence minister and current energy chief Denys Shmyhal with overseeing support efforts for affected individuals and communities, including addressing power outages, heating shortages and other “practical issues.”
“There are many problems that require urgent solutions,” the president said, noting that repair crews, energy companies, municipal services and the State Emergency Service are working “around the clock” to restore electricity supplies. Kyiv has been particularly affected after Russian strikes last Friday disabled key parts of the power grid, as daytime temperatures hover around minus 12 degrees Celsius and plunge to minus 18 at night.
Zelensky added that public authorities will “maximize efforts with partners to obtain the necessary equipment and additional support,” while the government will ensure “maximum deregulation of all processes” to speed up the connection of backup power equipment to the grid. He also confirmed that work is underway to significantly increase electricity imports into Ukraine.
The Ukrainian leader further instructed his Cabinet to review curfew regulations in light of the extreme cold, arguing that citizens must have the greatest possible access to assistance centers, while businesses should be given flexibility to plan their operations according to the state of the energy system.
International
France joins Denmark’s ‘Operation Arctic Resistance’ in Greenland amid U.S. tensions
French President Emmanuel Macron confirmed in the early hours of Thursday (Wednesday afternoon in El Salvador) that France will take part in “Operation Arctic Resistance,” after Denmark announced it would expand its military presence in Greenland amid rising tensions with the United States over Washington’s stated ambitions regarding the semi-autonomous territory.
“At Denmark’s request, I have decided that France will participate in the joint exercises organized by Denmark in Greenland, ‘Operation Arctic Resistance,’” Macron said in a brief message posted on social media at 5:18 p.m.
The French president added that “the first French military elements are already on their way, with others to follow,” though he did not specify the number of troops being deployed or the scale of France’s planned contribution.
The governments of Sweden, Norway and Germany have also confirmed the deployment of military contingents to Greenland. Germany’s armed forces will send a 13-member reconnaissance team to the Greenlandic capital, Nuuk, to take part in a mission scheduled to run from Thursday through Saturday, according to the German Ministry of Defence.
Denmark’s announcement came shortly before a Danish delegation met at the White House with U.S. Vice President JD Vance and Secretary of State Marco Rubio to discuss Washington’s plans regarding Greenland. Copenhagen said the military activities would be carried out “in close cooperation with NATO allies.”
International
Iran closes airspace amid U.S. threats and deadly nationwide protests
Iranian authorities closed the country’s airspace in the early hours of Thursday, according to data from flight-tracking website FlightRadar24, amid growing threats of a possible U.S. attack as protests across the country continue and have reportedly left thousands dead.
According to FlightRadar24, the Iranian government suspended all flights to and from the country, except for international flights that have received special authorization. The notice was initially issued for a duration of just over two hours.
The move comes after U.S. President Donald Trump in recent days threatened to strike Iran if its security forces failed to halt the deaths linked to weeks-long protests that began in Tehran and later spread to other Iranian cities. Despite the threats, the White House said diplomacy remains Trump’s preferred option.
Speaking from the Oval Office on Wednesday, Trump claimed that “the deaths in Iran have stopped” and said there would be no executions of protesters following his warnings to Tehran. He added that his administration would seek to verify those claims.
“I’ve been told the deaths in Iran are stopping. They’ve stopped, and that there are no plans for executions,” Trump told reporters, cautioning that the United States would be “very upset” if those assurances proved to be untrue.
The statements contrast with reports from rights groups. The Norway-based NGO Iran Human Rights (IHRNGO) said on Wednesday that more than 3,400 people have been killed since the protests erupted. Meanwhile, Kurdish-Iranian rights group Hengaw reported this week that a 26-year-old Iranian man, Erfan Soltani, was facing execution as of Wednesday.
Ukraine declares nationwide energy emergency amid russian attacks and extreme cold
France joins Denmark’s ‘Operation Arctic Resistance’ in Greenland amid U.S. tensions
Iran closes airspace amid U.S. threats and deadly nationwide protests
Tec de Monterrey honors one of its students for his contribution to nanotechnology in medicine
Defense Minister commends salvadoran soldier for Central American Cross Country victory
Extension of the state of emergency approved in southern Chile
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