This is a Guardian report on a peer-reviewed Nature study quantifying climate damages. The core claims are solid — researchers did calculate that US emissions caused $10 trillion in global GDP losses since 1990, with specific breakdowns for India and Brazil. The sourcing is strong (published research, named economists). The framing emphasizes the unfairness of poorer nations bearing costs they didn't cause, which is accurate to the research itself. One gap: the article notes the methodology measures GDP constraints from heat, not all climate harms (crop failures, displacement, etc.), but doesn't deeply explore what that means for completeness.