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• Comment Link Domenica, 27 Aprile 2025 12:20 posted by Chestercax

  Curiosity has maintained pristine pieces of the Cumberland sample in a “doggy bag” so that the team could have the rover revisit it later, even miles away from the site where it was collected. The team developed and tested innovative methods in its lab on Earth before sending messages to the rover to try experiments on the sample.
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  In a quest to see whether amino acids, the building blocks of proteins, existed in the sample, the team instructed the rover to heat up the sample twice within SAM’s oven. When it measured the mass of the molecules released during heating, there weren’t any amino acids, but they found something entirely unexpected.
  
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  The team was surprised to detect small amounts of decane, undecane and dodecane, so it had to conduct a reverse experiment on Earth to determine whether these organic compounds were the remnants of the fatty acids undecanoic acid, dodecanoic acid and tridecanoic acid, respectively.
  
  The scientists mixed undecanoic acid into a clay similar to what exists on Mars and heated it up in a way that mimicked conditions within SAM’s oven. The undecanoic acid released decane, just like what Curiosity detected.
  
  Each fatty acid remnant detected by Curiosity was made with a long chain of 11 to 13 carbon atoms. Previous molecules detected on Mars were smaller, meaning their atomic weight was less than the molecules found in the new study, and simpler.
  “It’s notable that non-biological processes typically make shorter fatty acids, with less than 12 carbons,” said study coauthor Dr. Amy Williams, associate professor of geology at the University of Florida and assistant director of the Astraeus Space Institute, in an email. “Larger and more complex molecules are likely what are required for an origin of life, if it ever occurred on Mars.”
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  President Donald Trump speaks about the mid-air crash between American Airlines flight 5342 and a military helicopter in Washington. Roberto Schmidt/AFP/Getty Images
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  President Donald Trump on Thursday blamed the Federal Aviation Administration’s “diversity push” in part for the plane collision that killed 67 people in Washington, DC. But DEI backers, including most top US companies, believe a push for diversity has been good for their businesses.
  
  Trump did not cite any evidence for how efforts to hire more minorities, people with disabilities and other groups less represented in American workforces led to the crash, saying “it just could have been” and that he had “common sense.” But Trump criticized the FAA’s effort to recruit people with disabilities during Joe Biden’s administration, even though the FAA’s Aviation Safety Workforce Plan for the 2020-2029 period, issued under Trump’s first administration, promoted and supported “the hiring of people with disabilities and targeted disabilities.”
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• Comment Link Domenica, 27 Aprile 2025 08:44 posted by DavidMum

  By Henry Austin
  A Russian-American woman who was imprisoned for treason by Russia has been freed, Secretary of State Marco Rubio said Thursday.
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  Former ballerina Ksenia Karelina was born in Russia but had built a new life as an aesthetician at a Los Angeles spa after immigrating to the United States over a decade ago. She “is on a plane back home to the United States,” having been “wrongfully detained by Russia for over a year,” Rubio said on in a post on X. He credited President Donald Trump with securing her release.
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  At the time, Russian legal group Perviy Otdel said it had information that Karelina had donated just over $51.80 from her U.S. bank account on Feb. 24, 2022 — the day that Russia launched its full-scale invasion of Ukraine — to a charity that sends aid to Ukraine. A spa where she had previously worked confirmed this in a statement on Facebook.
  
  Although Russia’s FSB did not confirm that figure, it said Karelina’s donation “was subsequently used to purchase tactical medical supplies, equipment, weapons, and ammunition for the Ukrainian armed forces.”
  
  She was sentenced in August to 12 years in a penal colony for “high treason,” having “fully admitted her guilt” at a closed trial in the southwestern Russian city of Yekaterinberg, Sverdlovsky Region Court said in a news release at the time.
  
  The sentence came against the backdrop of Russia’s 3-year-long war with Ukraine during which President Vladimir Putin’s government has cracked down on dissent. Any perceived criticism of the military is banned.
  
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• Comment Link Domenica, 27 Aprile 2025 08:12 posted by LloydTof

  Tesla is bringing its electric cars to oil-rich Saudi Arabia amid falling global sales
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  Tesla will start selling its electric vehicles in Saudi Arabia, entering the Gulf region’s largest economy as the company’s global sales are sliding and CEO Elon Musk courts controversy with his role in the US government.
  
  The carmaker announced Wednesday that it would host a launch event in the kingdom on April 10, where it will showcase its EVs. Attendees will also have the chance to “experience the future of autonomous driving with Cybercab and meet Optimus, our humanoid robot, as we showcase what’s next in AI and robotics,” Tesla (TSLA) said.
  
  Tesla may struggle to gain market share in oil-rich Saudi Arabia as EVs make up a little over 1% of all car sales in the country, according to a report by consultancy PwC published in September.
  Tesla’s entry into the new market comes as the company fights battles on several fronts.
  
  Last year, it recorded the first annual decline in sales in its history as a public company, posting a drop of 1%.
  
  The company is facing intensifying competition in China, the world’s largest auto market. On Tuesday, BYD, a Chinese maker of electric and hybrid cars, reported $107 billion in annual sales for 2024, beating the near-$98 billion notched by Tesla.
  
  And last week, BYD unveiled an ultra-fast charging system, which it said was capable of adding 250 miles (402 km) of range in just five minutes, easily outdoing Tesla’s charging technology. Tesla’s Superchargers take 15 minutes to charge an EV, providing a range of 200 miles.
  
  Tesla has also suffered slumping sales in Europe. In February, the carmaker sold around 40% fewer vehicles on the continent compared with the same month in 2024, according to the European Automobile Manufacturers’ Association.