In today's edition of Market Foolery, Motley Fool analysts answer a question from a listener with regard to the best way to invest in natural gas as a viable fuel source for the future. Investors could make a big conglomerate bet, like Royal Dutch Shell (NYSE: RDS.A), or a more focused play, like Westport (Nasdaq: WPRT). Generally speaking, Foolish analysts Mike Olson does not recommend an integrated major to play natural gas, and prefers an exploration and production company, or even a services company, instead.

That's not to say that Clean Energy Fuels couldn't have a bright future. The company is poised to make a big impact on an essential industry. Read all about Clean Energy Fuels in our brand new report. Just click here to get started.

Austin Smith has no positions in the stocks mentioned above. The Motley Fool owns shares of Clean Energy Fuels and Westport Innovations. Motley Fool newsletter services recommend Clean Energy Fuels and Westport Innovations. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.