And resources such as natural gas are at very low prices right now, due to recent development of huge deposits such as the Marcellus Shale. In the medium-to-lon

And resources such as natural gas are at very low prices right now, due to recent development of huge deposits such as the Marcellus Shale. In the medium-to-long term, I think that substitutability between oil and natural gas would go a long way, once oil prices get to a point where oil looks less attractive. While I'm not entirely unconcerned, I don't think there's any reason to panic.