Detailed text transcripts for TV channel - MSNBC - 20100728:21:37:00
Water's surface which is a big question? ed overton is an environmental signist at lsu, and john hofmeister, my friend, was president of shell oil. let me start with the professor. what are your signs -- what evidence do you have -- do you have to draw on as to how bad the long-term environmental or conservation damage is going to be here as of now? >> well, chris, we're still in the middle of this spill so we don't know for sure how long it's going to last and the total environmental damage, and we won't know for a while, but it's certainly good news that the visible oil is removed from the s...