The “green-friendly” investment firm co-founded and run by former Vice President Al Gore, 74, owns a portfolio of more than $26 billion worth of shares in nearly two dozen companies that were found to have increased greenhouse gas emissions in recent years, according to a report. Gore, whose Oscar-winning film “An Inconvenient Truth” cemented his status as the most prominent doomsayer on climate change, chairs the London-based Generation Investment Management, which touts a “stated emphasis on sustainable investment options.” But a recent analysis by Bloomberg News found that Generation’s Global Equity fund, which numbers a total of 42 companies, includes…