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cover of episode Dark oxygen could rewrite Earth’s history

Dark oxygen could rewrite Earth’s history

2024/9/11
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Unexplainable

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Alicia Smith
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Noam Hassenfeld
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Noam Hassenfeld: 本期节目讨论了在深海发现的无需阳光参与即可产生氧气的"黑暗氧气"。这一发现可能彻底改变我们对地球生命起源以及宇宙中生命存在的理解。科学家们提出了一个重要的问题:深海海底是否正在产生氧气?如果是,这将对我们已知的生命意味着什么? 这一发现具有重大的科学意义,它挑战了我们对生命起源的传统认知,并为寻找地外生命提供了新的线索。在太阳光无法到达的深海环境中,氧气的存在可能暗示着生命可以在更广泛的宇宙环境中生存。 Alicia Smith: 我是深海生态学家Alicia Smith,目前正在进行博士后研究,主要研究深海环境的基线特征以及深海采矿活动的影响。我们研究小组在北太平洋深海进行研究,意外发现了深海中存在"黑暗氧气"。我们最初的研究目的是为了评估深海采矿对海底环境的影响,但这一意外发现具有重大的科学意义。 我们推测,深海中的多金属结核可能通过电解海水产生氧气。多金属结核就像天然电池一样,其内部不同矿物质的差异电荷会产生能量,从而驱动海水的电解,产生氧气。这一过程不需要阳光参与,因此被称为"黑暗氧气"。这一发现可能对我们对海洋氧气循环的理解产生深远的影响,也为深海采矿活动带来了新的挑战。深海采矿可能对海洋生态系统造成不可逆转的损害,因此需要进行更深入的研究,以评估其风险。

Deep Dive

Chapters
Alicia Smith, a deep-sea ecologist, recounts her experience discovering dark oxygen during a research project. While deploying equipment to study the seafloor, she noticed oxygen levels increasing in a closed environment, contrary to expectations. After ruling out various equipment errors, the team realized they might have stumbled upon a significant discovery.
  • Oxygen levels increased in a closed environment at the seafloor.
  • Initial suspicions of equipment malfunction were ruled out.
  • The discovery was made during a deep-sea research project.

Shownotes Transcript

Scientists just discovered oxygen being produced without sunlight — without photosynthesis — at the bottom of the ocean. This “dark oxygen” could fundamentally change the story we tell of life on Earth and in the rest of the universe.

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