Earth, Air, Fire & Water, 'four elements' that comprise our universe according to ancient Western astrology, have been arguably mauled by the Industrial revolution. Water comprises 70 percent of the Planet (including us), while solar electro magnetic radiation powers it - churning the oceans, air and earth.
Dr. Emoto's experiment with water is a mind can-opener. Please see the youtube below - Ask yourself, if that's true of water then what is radiation? We know x-ray is harmful, infra-red warms deep muscle tissue, micro wave is being shunned and what about the subtle difference in radiation burning either charcoal or mineral coal? Isn't it likely that there's more than just yummy to food cooked on a wood fired cooker/oven?