The titular question is specified more fully, showing that the IPCC (Inter-Governmental Panel on Climate Change) answer is not the only one, briefly expanding on why the issue matters and alluding to the connection with nuclear power generation. The "Carbon Net Zero" project to prevent global warming is described as "a collective delusion of reference", with brief remarks on belief in human exceptionalism. Also, challenges to that belief are adumbrated from the history of cosmology and from the work of Charles Darwin, Sigmund Freud and others in the emotivist tradition. Then, alternatives to what we term the carbon hypothesis are described arising from palaeoclimatology. In particular, the work of Milutin Milankovitch is sketched out, explaining the ice ages in terms of some long-term cycles in the motion of the Earth. Johannes Kepler’s Laws of Planetary Motion were framed in the early Xvii century, and today much more is known about the movement of our Earth.