Thermal science for the real world: Reality and challenge

Thermal science becomes a main tool to the search for hidden pearls in various phenomena from geoscience to nuclear energy. This article elucidates the absolute temperature in view of the geometric potential theory, which sheds a new light on many mysteries in our world, including unification of Newton’s gravity and Coulomb's electronic force, quantized trajectories of planets, the Earth’s inner core, prediction of the speed of light and two-scale thermodynamics. Some conjectures are suggested to elucidate relativity in view of thermodynamics.