There's a ton of information about the available science, from high-level overviews all the way down to nitty-gritty technical details, in the periodic reports

There's a ton of information about the available science, from high-level overviews all the way down to nitty-gritty technical details, in the periodic reports from the UN Intergovernmental Panel on Climate Change. They're published every several years, and the most recent one is from 2014. A good place to start is the so-called synthesis report, which covers a mixture of physical science, human impact and public policy. Page 6 of the "summary for policymakers" includes a graph showing that although the error bars are still pretty big, the observed warming is consistent with estimates of human-caused effects, and vastly larger than can be explained by the "natural cycles" we know about. https://www.ipcc.ch/pdf/assessment-report/ar5/syr/AR5_SYR_FINAL_SPM.pdf https://www.ipcc.ch/pdf/assessment-report/ar5/syr/AR5_SYR_FI...