What is solar heat gain coefficient (SHGC)?

The Solar Heat Gain Coefficient is the fraction of the incident solar radiation admitted through a window, both directly transmitted and absorbed and subsequently released inward. SHGC is expressed as a number between 0 and 1. The lower a windows solar heat gain coefficient, the less solar heat it transmits.

A SHGC of 0.40 or less is recommended in warm climates. In heating-dominant climates, a high SHGC increases passive solar gain for the heating, but reduces cooling season performance, but reduces passive solar gain for heating. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.