According to a recent study published in the scientific journal Climatic Change and reported by The Guardian, 90 companies have been responsible for nearly two-thirds of all carbon dioxide and methane gas emissions in the entire world since 1750.

In the video below, Motley Fool contributor Jay Jenkins highlights the top two investor-owned companies, ExxonMobil (NYSE:XOM) and Chevron (NYSE:CVX). According to Jay, this should be a troubling revelation for long-term investors in these oil giants.