Tag: Air

The average person breathes in about 9,000 liters of air daily, but does air have any nutritional value beyond the life-sustaining oxygen? While not a food source, new scientific perspectives are exploring how our bodies may absorb trace nutrients directly from the air we breathe.

Over 99.9% of the volume in materials like fiberglass is actually trapped air, which is a surprisingly effective insulator. The principle of using a non-conductive substance to block heat flow is central to all insulation, whether in a polar bear's blubber or the walls of a house, highlighting what molecule is important for insulation.