I am a seventy-four old retired engineer/entrepreneur and think this threat of basic air pollution is overshadowed by more disruptive and sinister activities currently taking place on this planet. A population explosion resulting in pollution and starvation, land disruption, plant and animal extinction, government corruption, crime, addiction to legal and illegal narcotics and drugs, a breakdown of moral codes and wars with ever increasing lethal weapons are a greater concern for our survival. We may never get to 2047. If we don’t come to our senses we will share the same experience that happened to the inhabitants in Knotcher Land. Their fate is revealed in a novel by the same name.