Science

The way Earth's 'thermostat' works may have changed during Pangea era

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Briefings

Recent research suggests Earth's climate thermostat mechanism may have shifted during the Pangea era, potentially altering atmospheric carbon dioxide levels. The study indicates that life's emergence 3.5 billion years ago established a habitable range, but the specific thermostat dynamics during continental assembly remain unclear.

Key points

• Life originated on Earth approximately 3.5 billion years ago, establishing a habitable climate range that prevented extreme temperatures.
• The planet's climate thermostat relies on a carbon cycle to regulate atmospheric carbon dioxide concentrations.

Context

This research explores how Earth's climate regulation system functioned during the Pangea era, a period of continental assembly that may have influenced atmospheric composition and temperature stability.

Limitations

The study covers only the Pangea era and does not provide data on climate mechanisms prior to 3.5 billion years ago or after the era ended. Specific thermostat parameters during the Pangea era remain unmeasured.

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