Overview

• The study, published in Nature Communications, analyzed discrepancies in global population datasets from 1975 to 2010 using data from over 300 rural dam resettlement projects across 35 countries.
• Findings indicate rural populations were underestimated by 53% to 84% during the study period, and even the least biased 2010 datasets missed 32% to 77% of rural populations.
• Researchers highlight systemic issues in census methodologies, particularly in remote and conflict-affected areas, where logistical challenges impede accurate data collection.
• The study suggests that the current global population of 8.2 billion may be an underestimate but does not provide a revised figure.
• Experts are divided on the findings, with some questioning their global applicability, especially in countries with advanced registration systems, while others call for improved census practices and alternative data collection methods.