The Opec oil cartel has issued a reminder that crude will continue to be the world’s leading source of energy for decades, driven by less-wealthy countries seeking higher economic growth and improved standards of living. Opec’s bullish pronouncement comes as nations prepare to gather for the COP26 climate summit in Glasgow to discuss ways in which the world’s population can … [Read more...] about Oil the No. 1 source of energy until at least 2045, says Opec