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A giant meteorite boiled the oceans 3.2 billion years ago. Scientists say it was a ‘fertilizer bomb’ for life
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A massive space rock, estimated to be the size of four Mount Everests, slammed into Earth more than 3 billion years ago — and the impact could have been unexpectedly beneficial for the earliest forms of life on our planet, according to new research.

Typically, when a large space rock crashes into Earth, the impacts are associated with catastrophic devastation, as in the case of the demise of the dinosaurs 66 million years ago, when a roughly 6.2-mile-wide (10-kilometer) asteroid crashed off the coast of the Yucatan Peninsula in what’s now Mexico.

But Earth was young and a very different place when the S2 meteorite, estimated to have 50 to 200 times more mass than the dinosaur extinction-triggering Chicxulub asteroid, collided with the planet 3.26 billion years ago, according to Nadja Drabon, assistant professor of Earth and planetary sciences at Harvard University. She is also lead author of a new study describing the S2 impact and what followed in its aftermath that published Monday in the journal Proceedings of the National Academy of Sciences.

“No complex life had formed yet, and only single-celled life was present in the form of bacteria and archaea,” Drabon wrote in an email. “The oceans likely contained some life, but not as much as today in part due to a lack of nutrients. Some people even describe the Archean oceans as ‘biological deserts.’ The Archean Earth was a water world with few islands sticking out. It would have been a curious sight, as the oceans were probably green in color from iron-rich deep waters.”

When the S2 meteorite hit, global chaos ensued — but the impact also stirred up ingredients that might have enriched bacterial life, Drabon said. The new findings could change the way scientists understand how Earth and its fledgling life responded to bombardment from space rocks not long after the planet formed.

The mysterious symbols found carved in Qatar’s desert
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Some shoot out of the soft rock like reptiles bathing in the sun. Others are mysterious depressions resembling an ancient board game played all over the world. And a few are straight-up puzzling.

On a desolate and windswept corner of Qatar’s northeastern coast, among the sand dunes of the barren desert, lies Al Jassasiya, the Gulf country’s largest and most important rock art site.

Here, people centuries ago used a series of low-lying limestone outcrops as a canvas on which they carved symbols, motifs and objects that they observed in their environment.
Overall, archaeologists have found a total of some 900 rock carvings, or “petroglyphs,” at Al Jassasiya. They are mostly enigmatic cup marks arranged in various patterns, including rows and rosettes, but also eye-catching representations of sailing ships, usually seen from above but also depicted in linear profile, among other symbols and signs.

“Although rock art is common in the Arabian Peninsula, some of the carvings in Al Jassasiya are unique and cannot be found anywhere else,” Ferhan Sakal, head of excavation and site management at Qatar Museums, told CNN, referring to the petroglyphs of ships seen from a bird’s-eye view.

“These carvings represent a high degree of creativity and observation skills <on>the part of] the artists who made them,” he said. “Also <of> abstract thinking, as they were not able to see the dhow (a traditional ship) from above.”

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A ring found among the debris of Florida’s recent hurricanes awaits its owner
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Scattered across Florida’s hurricane-ravaged communities are piles of debris, remnants of what were once homes. Cherished memories — photo albums, family heirlooms, and tokens of love — swallowed by floodwaters and carried miles away, are now reduced to mere fragments and discarded amid the wreckage.

But in one of these piles of lost memories, a small, inconspicuous velvet black box was discovered with a ring and a note that read: “I was 18 when my parents gave it to me.”
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Now, Joe Kovach, the engineer managing one of the debris sites in Tarpon Springs, Florida, where the box was found, is searching for its owner.

“Everyone has been basically dumping their entire lives onto the curb after the storm when everything flooded. My own boss’ house had 30 inches (of water) in it, and I saw his face and just how devastating it can be for everyone,” Kovach, an engineer with Pinellas County Public Works, told CNN.

“A lot of people in the community were really affected by these two storms, if there’s just a little bit I can do to give back, then that’s perfect.”

A contractor, who was gathering and condensing debris with an excavator, discovered the ring when he looked down and saw the box.

“This was a needle in a haystack for sure. For something like that to survive all that when everything else was so wet and saturated, that was kind of incredible,” Kovach said.
Although the ring was found after Hurricane Milton, Kovach is sure the treasure was initially lost amid the ruins of Hurricane Helene, based on the pile of debris it came from, which Pinellas County Public Works tracks. It is likely the owner of the ring is from Crystal Beach, Ozona, or Palm Harbor, Kovach said.

On Tuesday, after the contractor informed him about the ring, Kovach posted a photo of the box and the note on several local community Facebook pages, asking if it belonged to anyone. He did not include a photo or description of the ring to ensure it is returned to the rightful owner who can accurately describe it. On the inside lid of the box is a gold engraving with the jewelry brand, “The Danbury Mint.”

Как выбрать и купить УЗИ-аппарат: подробное руководство
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Ультразвуковая диагностика (УЗИ) занимает одно из ведущих мест среди методов исследования в медицине благодаря своей безопасности, информативности и отсутствию инвазивности. При выборе УЗИ-аппарата для медицинского учреждения важно учитывать несколько ключевых аспектов, которые помогут принять правильное решение. В этой статье мы подробно рассмотрим, на что обратить внимание, когда вы планируете купить УЗИ-аппарат.

Типы УЗИ-аппаратов
Первый шаг при покупке ультразвукового аппарата — это выбор типа устройства, который будет наилучшим образом отвечать потребностям вашей практики. Существуют следующие основные категории УЗИ-аппаратов
Покупка УЗИ-аппарата — это серьезное вложение, которое требует внимательного подхода и анализа множества факторов. Правильный выбор оборудования поможет повысить качество диагностики, улучшить обслуживание пациентов и увеличить эффективность работы вашего медицинского учреждения. Перед покупкой рекомендуется тщательно изучить рынок, определить потребности вашей клиники и выбрать оптимальное решение, которое будет соответствовать вашим требованиям и бюджету.

Ремонт Мерседес в Москве — Клубный сервис
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Ремонт и обслуживание Mercedes: Надежность и качество от профессионалов
Автомобили Mercedes-Benz давно зарекомендовали себя как эталон надежности, комфорта и престижа. Однако, как и любой автомобиль, даже самые надежные модели нуждаются в своевременном обслуживании и ремонте. Для поддержания вашего Mercedes в отличном состоянии необходимо выбирать специализированный сервис, который предлагает профессиональный ремонт и обслуживание.
Ремонт и обслуживание автомобилей Mercedes — это сложный процесс, требующий профессионального подхода и знаний. Выбирая специализированный сервис, вы гарантируете своему автомобилю надежную и качественную работу, а себе — уверенность и безопасность на дороге. Не экономьте на обслуживании, ведь своевременный ремонт поможет избежать больших расходов в будущем и сохранить ваш Mercedes в идеальном состоянии на долгие годы.