Any technology that may mitigate emissions of carbon dioxide and other greenhouse gasses that arise from the burning of coal for electrical power.

plural of coal tit

(idiomatic) Something whose sensitivity to adverse conditions makes it a useful early indicator of such conditions; something which warns of the coming of greater danger or trouble by a deterioration in its health or welfare.

copperleaf

present participle of sugar-coat

A thin coat of mortar applied to a wall to fill cracks and small holes

(Britain) A rail coach on which unnecessary noise is discouraged.

A warm, hooded coat, made from duffel, fastened with toggles.

(geology) A kind of coal, historically found near the surface, which split like shale rock and burned with medium smoke, a yellow flame and a sulfur smell.

plural of coat hanger