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US Annual CO₂ Emissions vs US Military Expenditure

US Annual CO₂ Emissions and US Military Expenditure correlate at r = -0.88 over 65 years (1960–2024), p < 0.0001. With the time trend removed, r = -0.68. Holds up after detrending.

Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = -0.68). Correlation still isn't causation, but this one isn't an obvious artifact.

Pearson r
-0.88
p-value
< 0.0001
Years compared (n)
65 (1960–2024)
95% confidence interval
-0.92 to -0.81
Correlation with the time trend removed
-0.68

Sources

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Correlation does not imply causation. How the verdict is worked out.