Our planet is poised at the brink of a severe environmental crisis. Current environmental problems make us vulnerable to disasters and tragedies, now and in the future. We are in a state of planetary emergency, with environmental problems piling up high around us.
chimney pot. n. A short, usually earthenware pipe placed on the top of a chimney to improve the draft. chimâ²ney pot`. n. an earthenware or metal pipe atop a chimney, esp. to increase the draft and disperse smoke. [1820â30] Translations.
Mantle convection is quite different from the usual pot-on-a-stove metaphor. A large bowl of several superposed fluids and ice cubes in a microwave oven, programmed to decrease the power with time, would be a better, but still incomplete, analogy.