Ions are atoms or molecules that have gained or lost an electron. Both positive and negative ions exist in the air – negative ions attract particles of pollution and give them a negative charge, making them seek an electrical “ground”, causing them to fall harmlessly to the floor. Being surrounded by negative ions means better air quality.
Negative ions occur more often in nature, created by things like lightning storms, sunlight, waterfalls, and ocean waves. This is one of the reasons why we feel renewed or refreshed after a storm or after spending time at the beach. Positive ions are created by electronic devices like computers, TVs, microwaves, etc and can often exacerbate problems like allergies, stress and sleep trouble.