The UN’s Intergovernmental Panel on Climate Change (IPCC) coined a new term that confounds the established laws of physics. This term is “back radiation” heating. It is a conjured up mechanism upon which a 21st Century international pseudo science is based – atmospheric physics. But whereas radiation goes where it likes, heat only streams one way – from warmer to cooler as per actual physical laws. Strict adherence to such laws is what distinguishes the science of Principia Scientific International from that of the IPCC and this is perfectly embodied in a telling new paper by Jef Reynen.