ExxonMobil Is 1 of the Largest Energy Companies by Market Cap. But Is It a Buy?

America's largest oil and gas company is no dinosaur. The oil and gas stock can still be a great addition to your portfolio. Renewable energy sources, including wind and solar, have experienced significant growth over the past few decades, becoming a major contributor to the world's energy needs. But don't let anyone tell you that oil and gas companies are dying. The reality is far from it. Research by The Motley Fool laid out today's energy landscape, and virtually every single one of the world's largest e ...