>> joining us tonight on "the ed show" is the executive vice president and president of development for transcanada. mr. posteriorbay, appreciate yo time. i want to get to the quality of the oil. is the tar sands oil the cleanest barrel of oil produced in north america? that was the claim made by senator landrieu of louisiana. what is your response to that? >> you know, ed, i think this debate over oil and the relatively dirtiness of oil is far overstated. let's be clear. oil is oil. the state department in any of the several environmental statements they did on the keystone pipeline most notably the final eis came to the conclusion that a barrel of oil from the oil sands is about 16% or 17% more carbon intensive than the average barrel of oil refined in the u.s. i think the important thing to