What are allowances markets?

Some articles on market, allowances markets:

Carbon Finance - Market Value
... The market for the purchase of carbon has grown exponentially since its conception in 1996 ... The following is the estimated size of the worldwide carbon market according to the World Bank Volume (millions metric tonnes, MtCO2) 718 ... (330 in Main Allowances Markets 388 in ...

Famous quotes containing the words markets and/or allowances:

    When the great markets by the sea shut fast
    All that calm Sunday that goes on and on:
    When even lovers find their peace at last,
    And Earth is but a star, that once had shone.
    James Elroy Flecker (1884–1919)

    Great allowances ought to be made for the petulance of persons laboring under ill-health.
    Samuel Richardson (1689–1761)