Yes. The scientific consensus—based on multiple independent lines of evidence—is that human activities are the dominant cause of the observed warming since the mid-20th century.
Core Evidence
•Greenhouse gas increase: Atmospheric CO₂ has risen from ~280 ppm (pre-industrial) to over 420 ppm. The isotopic signature (decline in ¹³C/¹²C and ¹⁴C) matches emissions from burning fossil fuels, not volcanoes or other natural sources. Methane and nitrous oxide have also increased sharply due to agriculture, fossil fuels, and land use.
•Energy imbalance and physics: These gases trap outgoing longwave radiation. Satellite and surface measurements confirm the resulting radiative forcing. The basic physics has been understood since the 19th century (Fourier, Tyndall, Arrhenius).
•Attribution studies: Climate models that include only natural factors (solar variability, volcanoes, orbital changes) cannot reproduce the observed warming pattern, especially the tropospheric warming + stratospheric cooling and greater land/nighttime warming. Models that include anthropogenic greenhouse gases and aerosols match the instrumental record closely. Detection-and-attribution work by groups including the IPCC quantifies human influence as responsible for essentially all of the ~1.1–1.2 °C global mean surface warming since the late 19th century (IPCC AR6).
•Fingerprints: Observed changes match predicted anthropogenic patterns: ocean heat content increase, cryosphere loss (Arctic sea ice, glaciers, ice sheets), sea-level rise from thermal expansion + melt, and shifts in extremes. Natural forcings alone do not.
Natural Variability Still Exists
Climate has always varied (Milankovitch cycles, solar output, internal modes like ENSO, volcanic aerosols). Those processes continue and modulate year-to-year and decade-to-decade weather, but they do not explain the multi-decadal global trend or the specific vertical/spatial pattern of recent change. Solar irradiance has been flat-to-declining during the strongest recent warming; the orbital forcing relevant to ice ages operates on much longer timescales.
Consensus and Uncertainty
•Statements from the IPCC, NASA, NOAA, national academies of science of major countries, and the vast majority of climate papers agree on human dominance for recent change.
•Remaining uncertainties concern exact climate sensitivity, aerosol effects, regional details, and carbon-cycle feedbacks—not the primary attribution of the observed warming to humans.
•“Climate change” in public discussion almost always refers to this rapid, ongoing anthropogenic warming and its consequences, not the existence of natural climate variability across geologic time.
In short: humans are responsible for the large majority of the warming observed over the last ~150 years through greenhouse-gas emissions and land-use change. For primary sources see IPCC AR6 Working Group I (especially Chapters 2–3 and the Summary for Policymakers), NASA’s climate pages, and the instrumental + paleoclimate records they synthesize.