Earth's first bacteria used oxygen about one billion years earlier than we thought Bacteria used oxygen far earlier than expected, reshaping views on early life, evolution, and photosynthesis origins.

Earth’s first bacteria used oxygen about one billion years earlier than we thought: Bacteria used oxygen far earlier than expected, reshaping views on early life, evolution, and photosynthesis origins.

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How does the human brain create and retrieve memories? Scientists figured it out memory formation hinges on connections between groups of engram cells, which are neurons thought to capture and store distinct experiences.

How does the human brain create and retrieve memories? Scientists figured it out: Memory formation hinges on connections between groups of engram cells, which are neurons thought to capture and store distinct experiences.

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