Human greenhouse-gas emissions are the primary driver of recent global warming.

Scoped the claim to the principal cause of recent warming.

Specified the empirical standard and separated policy from science.

Identified independent datasets and attribution methods.

Used the IPCC assessment and NASA's evidence summary.

Recorded the key findings and their locations.

Checked the quotations and reviewed their relevance.

Built the convergent-attribution argument.

Built the strongest natural-variability objection.

Marked the inference as inductive and model-based.

Compared solar, internal, and unknown-mechanism alternatives.

Recorded uncertainty in magnitude and regional detail.

Assigned strongly supported, not proven.