Science & ClimatePhys.org•1 min read•11/3/2026 (1h ago)

Collective human metabolism produces 2 billion metric tons of CO₂ a year, global study estimates

Collective human metabolism produces 2 billion metric tons of CO₂ a year, global study estimates
60-Word AI Digest

A University of Bath–led study has estimated that the carbon dioxide produced by humans as our bodies turn food into energy rose by 74% between 1985 and 2015, reaching 2.05 billion metric tons a year. Researchers say the findings could help scientists better understand where carbon comes from, where it goes and how human activity fits...

Key Takeaways

  • A University of Bath–led study has estimated that the carbon dioxide produced by humans as our bodies turn food into energy rose by 74% between 1985 and 2015, reaching 2.05 billion metric tons a year.
  • Researchers say the findings could help scientists better understand where carbon comes from, where it goes and how human activity fits into the bigger picture.
  • Full details and original dispatch available below.

A University of Bath–led study has estimated that the carbon dioxide produced by humans as our bodies turn food into energy rose by 74% between 1985 and 2015, reaching 2.05 billion metric tons a year. Researchers say the findings could help scientists better understand where carbon comes from, where it goes and how human activity fits into the bigger picture.

Original Publisher Attribution

This summary was curated from Phys.org.

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Collective human metabolism produces 2 billion metric tons of CO₂ a year, global study estimates — Loop60