Dive summary:

• New understanding of indoor air quality and its significant impact on human health may see building codes changed to reflect science rather than the traditional engineering-based rules.
• At the U.S. Department of Energy’s Lawrence Berkeley National Laboratory in California, researchers have discovered  aspects of indoor air that were unsuspected before, and they say the air in buildings has as big a health effect as traffic accidents.
• Americans spend an estimated 70% to 90% of their time indoors, and the move create energy-efficient buildings has made it important to understand the constituents of indoor air, including the now-recognized fine particles.

From the article:

“As a result of this study, we can not only say that all our ventilation standards should focus on [fine particles] we can also say, hey this is a really big deal because it’s as damaging to the health of the U.S. population as traffic accidents.” ...