CALGARY - ENERGY - The price of a barrel of oil tumbled today on market uncertainty after the close of the OPEC meetings in Vienna. The OPEC Conference reviewed the oil market outlook, in particular supply/demand projections for the first, second, third and fourth quarters of 2015, with emphasis on the first half of the year. <br /> <br />OPEC also considered forecasts for the world economic outlook and noted that the global economic recovery was continuing, albeit very slowly and unevenly spread, with growth forecast at 3.2% for 2014 and 3.6% for 2015.
