There are investment opportunities in both, but finding your edge in oil is a lot easier than in natural gas, right now.
Airline stocks fell Monday, led by bankruptcy speculation for troubled American Airlines. American shares tumbled 33 percent, while airline stocks generally dropped 9.8 percent.
Southwest Airlines is letting travelers go from, say, Seattle to Boise or Albany to Baltimore for $40. Some experts say the move by Southwest Airlines could spark a fare war in the industry.
After gains early in the day, the session closed lower, with the Dow declining about 19 points