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Clear politics average. its now roughly down to one point. the race has tightened over the last couple weeks. i think everybody agrees if the election was held tomorrow, the president would be re-elected. some time if romney is to be elected, hes going to have to pass the president and not look back. and part of what republicans have to be looking for out of this convention is when hes done speaking on thursday night and that polling begins. friday, saturday, tough to get samples, you know, for ...

And the fellow astronaut spent three hours walking on the moon and collecting samples and taking pictures. armstrongs family said he died following complications from cardiac vas vas procedures, greg? >> what a day that was as he stepped on the dusty surface of the moon for the first time. neil armstrong radied back to word. that is one small step for man and one giant leap for mankind. armstrong rewrote history and helped to give the united states a major victory in the cold war space race. he ...

Said this is what happened. i was there in the morning when we do this. >> wheres the beef? one of the best trial attorneys i have seen. >> lit me ask you this. they have two blood samples from 2009 to 2011 thats consistent with manipulation. what does that mean? >> consistent with -- you take 600 tests and you pass every single test and you have two samples which are suspect. but they say here is a guy -- let me answer your question, arthur, why would you give up? why would you give up? because...

Composition of nearby rocks. and it is the first rover on the surface of mars to be able to drill and analyze samples. all the data can be sent to earth with the most detailed images yet of the martian surface. by studying the crater layer by layer, scientists hope to learn whether this now dead planet could once have supported life billions of years ago. >> i love that we are so technologically advanced we can get there, but it still goes so slow. a football field a day. lets expedite it a litt...

About why. julie? >> reporter: jon, families visiting the beach in galveston for a day of fun got a stinky welcome. they were greeted by awful smell on the beach and awful sight as well. look at thousands of dead, stinky fish blanketed beaches. texas parks and wildlife trying to figure out why the fish showed up. biologists started testing ph, saline and water levels in samples taken along the coast. so far they expect low oxygen in the water as the problem. according to their tests they say the...

Close tie like that poll? the romney campaign yesterday, after they picked congressman ryan admitted to the media, their own polls showed the gap growing and they needed to do something to change the race. >> is it the right thing to do? >> time will tell. >> we dont know. but we said that this is romneys election to lose . truth of the matter he is losing it. from the time he should have made a articulate vision and defined himself and helped himself . he let the alabama campaign take the initi...

Toward the hunt for the environment -- that all goes toward the hunt for the environment for life on mars. >> what else will scientists learn from the rock samples? this is fascinating stuff. >> well, theyre also going to learn from the rock samples how variable the environments have been in this particular area. so for example, things like if water was part of the environment that was here near gale crater, as the rover makes its way up toward mount sharp, how much water was there in the past? ...

>> well, ed, the pictures are going to tell us a tremendous amount about the area where the rover is now. we can look around and identify on the surface that there are lots of pebbles around on the surface. that tells us something about some mechanism of erosion for the rocks that are there. we can also see that from the blast from the landing rockets that underneath some of that dust thats right on the surface there, theres bedrock right there, so that gives us another hint about the geology pr...

Veneer, if you can say, of the dust and dirt on the surface is right over some bedrock. so right nearby there is bedrock that perhaps curiosity could examine also. shannon: how much of a success for nasa is it after spending 360 million miles, they lands within a mile of their target. this has to be huge encourage to the nasa folks. >> it is. this is the precise target the guys were aiming for on mars. the jet propulsion laboratory was using the science lab and curiosity to get inside the crater...

Overrepresented in these samples they suggest some sort of movement towards president obama over the past several weeks. that has to give them concern. i think it is one of the reasons weve heard so much talk about paul ryan. one of the reasons, at this point, if i had to guess, i would have been skeptical three weeks ago. but today i would say there is more, a better chance paul ryan is chosen than he is not chosen as mitt romneys vice-presidential running mate. rick: steve, thanks for talking ...