Fire worship fire of the hearth and fire of the forge. Hearth worship was maintained in Rome by the Vestal Virgins, who served the goddess Vesta, protector of the home, who had a sacred flame as the symbol of her presence in the city ("cf." Sacred fire of Vesta). The Greek equivalent of the goddess was Hestia, whose worship is less well attested. The fire of the forge was associated with the Greek god Hephaestus and the Roman equivalent Vulcan. These two seem to have served both as craft-guild patrons and as protectors against accidental fires in cities. Also associated with fire
Tobacco smoking climb in the developing world. Smoking is the most common method of consuming tobacco, and tobacco is the most common substance smoked. The agricultural product is often mixed with additives and then combusted. The resulting smoke is then inhaled and the active substances absorbed through the alveoli in the lungs or the oral mucosa. Combustion was traditionally enhanced by addition of potassium or nitrates. Many substances in cigarette smoke trigger chemical reactions in nerve endings, which heighten heart rate, alertness and reaction time, among other things. Dopamine and endorphins are released, which are often associated with pleasure. As of 2008