To investigate the impact of temperature on innovation the team assessed the number and quality of scientific papers published from 1980–2003.
Poor countries produced fewer scientific papers in hot years — a rise of one degree Celsius was associated with a nine per cent drop in the number of papers published.
This suggests that higher temperatures impede innovation and that over time this could widen the gap between rich and poor countries.
The study also found that a temperature rise of one degree Celsius correlated with a 1.1 per cent decrease in economic growth in the same year.
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