Proof Engine Verification: Current global warming is primarily driven by natural climate cycles rather than human CO2 emissions.

Automated fact-verification of the claim: "Current global warming is primarily driven by natural climate cycles rather than human CO2 emissions." Verdict: DISPROVED Key Findings Three independent authoritative sources (NOAA ×2, NASA) — all tier-5 government agencies — explicitly state that human greenhouse gas (GHG) emissions, not natural cycles, are the primary driver of current global warming. All three citations were verified live against the source pages (B1, B2, B3). NOAA states: "Virtually all climate scientists agree that this increase in heat-trapping gases is the main reason for the 1.8°F (1.0°C) rise in global average temperature since the late nineteenth century." (B1) NOAA further rules out natural alternatives: "no other known climate influences have changed enough to account for the observed warming trend" (B2). NASA, addressing solar activity directly, concludes: "It is therefore extremely unlikely that the Sun has caused the observed global temperature warming trend over the past half-century." (B3) Adversarial searches found no major scientific institution, national academy, or peer-reviewed paper from a mainstream research body claiming natural cycles are the primary (>50%) driver of current warming. Files proof.py — Re-runnable Python verification script proof.md — Structured proof report proof_audit.md — Full verification audit trail proof_narrative.md — Plain-language summary proof.json — Machine-readable structured data Generated by Proof Engine v1.0.0.