Blog
Mini Case Study: Apartment Ventilation in Belgrade
It appears that apartment ventilation is no longer a luxury. On the other hand, it is a necessity for healthy living, long-term savings, and energy ef...
Damaged Asphalt – Invisible Environmental Consequences
In recent days, the media has reported extensively on damaged asphalt surfaces near Ušće in Belgrade, Serbia. This raises an important question. What ...
Residential Ventilation by Marquis Intelligence
The latest Eurovent document “Residential Ventilation Systems in New and Renovated Buildings to Support EPBD 2025” clearly defines the need for ventil...
Janet Parker: Victim of a Deadly Virus from Ventilation
The life story of Janet Parker resembles the plot of a thriller with elements of horror. And yet, she was just an ordinary woman, doing her job as a m...
Blog as a Digital Trace of Air
The "Blog as a Digital Trace" saga, featuring fascinating, primarily scientifically based stories and historical reflections on air, began exactly thr...
40 Years Since the Discovery of the Titanic Wreck
Exactly four decades ago, on September 1, 1985, the renowned oceanographer Dr. Robert Ballard made a historic discovery. He found the Titanic Wreck at...
Partner par excellence – who and why
What does it truly mean to be a partner par excellence in business? Is it someone who delivers impressive results quickly, only to leave a trail of pr...
PFAS or forever chemicals – nonsense or threat?
What are PFAS, or forever chemicals?
PFAS sounds like a bad word, but what does it actually mean? It refers to a group of chemicals that deserve our ...
PM2.5 Particles According to the New Air Protection Law
In June 2025, a new Law on Air Protection was adopted in Serbia (the “Official Gazette of RS”, No. 51/2025). Although Article 6 explicitly states that...
World Economic Forum – Global Action!
Call for Open Action
The World Economic Forum has publicly issued an appeal for global action to combat indoor air pollution—a topic that Marquis Int...