Politics (from Greek: πολιτικά, translit. Politiká, meaning "affairs of the cities") is the process of making decisions that apply to members of a group.
A weapon that comes down as still As snowflakes fall upon the sod; But executes a freeman's will, As lightning does the will of God; And from its force, nor doors nor locks Can shield you; 'tis the ballot-box.
Aside from being a public health hazard, particles in the atmosphere affect climate. New data mining and analysis methods are shedding light on the role of one of the most important components, black carbon.
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