Most read reports
- The State of Food Security and Nutrition in the World 2018: Building climate resilience for food security and nutrition [EN/AR/RU]
- El Nino Outlook – September 2018
- IDMC Mid-Year Figures: Internal Displacement in 2018
- Levels & Trends in Child Mortality: Report 2018
- Extreme hunger could kill 600,000 children in war zones this year
By David Rosnick*
This paper examines the impact of population growth on global climate change. The author employs the Global Change Assessment Model (GCAM) to estimate the effects of population growth on the global average temperature by 2100. Observing that a larger population supports a larger economy, which translates in close proportion into additional releases of carbon dioxide (CO2), the paper notes that global temperature should in any year be nearly linear in relation to the rate of growth when the rate of population growth is constant.