How are negative ions created?

Created by radiant/cosmic rays and thunderbolts. It is believed that negative ions, which exist in living space, are created by radiant rays emitted from the inside of the earth, cosmic rays and thunderbolts. Positive ions are also created during these ionizing processes. Cell phone look-alike Mobile Negative Ion Generator (Ionizer) ! Generates approx. 140,000 (pcs/cc) negative ions at 30cm. Wear around the neck and enjoy negative ions at anytime, any where!