The first 'reaction' that we tried for our hand warmer involved dissolving potassium carbonate (K 2 CO 3) in water. Potassium carbonate is one of the chemicals left behind in the ashes of burnt wood.

A South Carolina woman has been left unable to shower due to a debilitating water allergy, which causes her to experience excruciating itchiness upon contact with H2O. “It’s been difficult to ...