Sustainable Convergence: The H Heuristics Concept
Sustainable Convergence, a concept developed by Hunter Hughes, treats economic catch-up and environmental sustainability as one task; since 2000 average Global South income rose from 13% to 23% of the high-income level (18% to 20% without China and India), access has converged fastest (1.05 billion fewer people without clean cooking), 78% of people in developing economies converged on carbon-intensive paths, and if laggards matched the proven pace of the 75th-percentile peer, 624 million more people would be online and 185 million more on power by 2035; with the same income gains, a clean path puts world CO2 to 2100 at about 819 Gt against 3,084 Gt on a fossil path, inside the roughly 1,050 Gt 2°C budget.