12219 комментарии

• Комментировать Пятница, 04 Апрель 2025 10:45 написал Charlestrier

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• Комментировать Пятница, 04 Апрель 2025 10:42 написал EddieAnype

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• Комментировать Пятница, 04 Апрель 2025 10:00 написал Charlestrier

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• Комментировать Пятница, 04 Апрель 2025 09:56 написал EddieAnype

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• Комментировать Пятница, 04 Апрель 2025 08:36 написал Keithfer

  https://telegra.ph/Luchshie-onlajn-kazino-na-realnye-dengi-v-24-2025-godu-04-02
• Комментировать Пятница, 04 Апрель 2025 08:04 написал Keithfer

  https://telegra.ph/Luchshie-onlajn-kazino-na-realnye-dengi-v-24-2025-godu-04-02
• Комментировать Пятница, 04 Апрель 2025 08:02 написал StevenWaf

  https://telegra.ph/Luchshie-onlajn-kazino-na-realnye-dengi-v-24-2025-godu-04-02
• Комментировать Пятница, 04 Апрель 2025 07:29 написал StevenWaf

  https://telegra.ph/Luchshie-onlajn-kazino-na-realnye-dengi-v-24-2025-godu-04-02
• Комментировать Пятница, 04 Апрель 2025 04:54 написал Billyslosy

  Mist and microlightning
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  To recreate a scenario that may have produced Earth’s first organic molecules, researchers built upon experiments from 1953 when American chemists Stanley Miller and Harold Urey concocted a gas mixture mimicking the atmosphere of ancient Earth. Miller and Urey combined ammonia (NH3), methane (CH4), hydrogen (H2) and water, enclosed their “atmosphere” inside a glass sphere and jolted it with electricity, producing simple amino acids containing carbon and nitrogen. The Miller-Urey experiment, as it is now known, supported the scientific theory of abiogenesis: that life could emerge from nonliving molecules.
  For the new study, scientists revisited the 1953 experiments but directed their attention toward electrical activity on a smaller scale, said senior study author Dr. Richard Zare, the Marguerite Blake Wilbur Professor of Natural Science and professor of chemistry at Stanford University in California. Zare and his colleagues looked at electricity exchange between charged water droplets measuring between 1 micron and 20 microns in diameter. (The width of a human hair is 100 microns.)
  
  “The big droplets are positively charged. The little droplets are negatively charged,” Zare told CNN. “When droplets that have opposite charges are close together, electrons can jump from the negatively charged droplet to the positively charged droplet.”
  The researchers mixed ammonia, carbon dioxide, methane and nitrogen in a glass bulb, then sprayed the gases with water mist, using a high-speed camera to capture faint flashes of microlightning in the vapor. When they examined the bulb’s contents, they found organic molecules with carbon-nitrogen bonds. These included the amino acid glycine and uracil, a nucleotide base in RNA.
  
  “We discovered no new chemistry; we have actually reproduced all the chemistry that Miller and Urey did in 1953,” Zare said. Nor did the team discover new physics, he added — the experiments were based on known principles of electrostatics.
  
  “What we have done, for the first time, is we have seen that little droplets, when they’re formed from water, actually emit light and get this spark,” Zare said. “That’s new. And that spark causes all types of chemical transformations.”
• Комментировать Пятница, 04 Апрель 2025 04:53 написал Herbertdop

  A tiny rainforest country is growing into a petrostate. A US oil company could reap the biggest rewards
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  Guyana’s destiny changed in 2015. US fossil fuel giant Exxon discovered nearly 11 billion barrels of oil in the deep water off the coast of this tiny, rainforested country.
  
  It was one of the most spectacular oil discoveries of recent decades. By 2019, Exxon and its partners, US oil company Hess and China-headquartered CNOOC, had started producing the fossil fuel.? They now pump around 650,000 barrels of oil a day, with plans to more than double this to 1.3 million by 2027.
  
  Guyana now has the world’s highest expected oil production growth through 2035.
  
  This country — sandwiched between Brazil, Venezuela and Suriname — has been hailed as a climate champion for the lush, well-preserved forests that carpet nearly 90% of its land. It is on the path to becoming a petrostate at the same time as the impacts of the fossil fuel-driven climate crisis escalate.
  
  While the government says environmental protection and an oil industry can go hand-in-hand, and low-income countries must be allowed to exploit their own resources, critics say it’s a dangerous path in a warming world, and the benefits may ultimately skew toward Exxon — not Guyana.