Keystone Pipeline some are pushing for, including President Obama, that would extend from Alberta, Canada all the way to the Gulf Coast. The plan is to use this pipeline to transport synthetic crude oil from the Athabasca Oil Sands. You may have heard a little about this recently with the arrest of actress Daryl Hannah in a protest against building the pipeline extension.
Mark Bittman recently weighed in on the extension being proposed for this pipeline. There was also a short interview on The Brian Lehrer Show discussing the Keystone XL Pipeline.