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some governments (e.g., in the US and countries dependent on revenue from sale of fossil fuels), it is being supported by international scientific collaborations. 10.1.3 Canglobalwarmingandclimatechangebe attributed tohumanactivities,andwhatare those activities? TheCO2concentrationchart and thehockeystickchart, together with large amounts of subsequent data gathering and related scientific analysis, provide a clear picture that something changed significantly after the industrial revolution gained momentum. The work of Arrhenius and others has illuminated the role of greenhouse gases in global warming. While some climate change deniers and minimalizers still attribute global temperature changes to normal global warming cycles, the vast majority of climate change scientists, and a steadily increasing number of policymakers and the general public, accept that combustion of fossil fuels and the subsequent release ofCO2, is responsible for recent increases in global temperatures. Figure10.2 Theoriginal hockeystickchart (65) (Source:Wikipedia). Water,Energy, andEnvironment–APrimer170