Earlier this month, four people in Sullivan, Mo., who overdosed on what police indicate was most likely flakka, took to the streets, barking and shedding their clothes, and broke into homes and businesses. Two were arrested and the others were taken to a hospital.
Water heating is a thermodynamic process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating. In industry, hot water and water heated to steam have many uses.
A convection heater is  a heater which operates by air convection currents circulating through the body of the appliance, and across its heating element. This heats up the air, causing it to increase in volume and so become buoyant and rise. Oil heaters are an example of this kind of heating appliance.