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charged with public intoxication, disorderly conduct, resisting arrest. take a look at this. near los angeles, one shopper actually pepper sprayed the people in line ahead of her at a walmart to get the year's hot video game console and it worked. sandra endohas developments. what more have you learned about the attack? it's almost impossible to believe that this actually happens during the holiday shopping season, but yet here we go again. >> reporter: yeah, absolutely, jim. that video is so amazing, and incredible to see the crowd as they go after these discounted items in walmart....

World has been habitable in the past and whether they could harbor life. so samples are important. >> so, jim, with all the budgetary problems and pressures that we have here on this planet, why should we be reaching out to the planets, and potentially the stars, looking for space bots? >> well it's all about priorities. it's about what do you want to do in terms of exciting our next generation. what do you want to do, in understanding the solar system, how life originated here and how might we benefit with that knowledge of going into the future. it really is all about our future. >> jim gree...

Nasa is really search for signs of life if our own solar system. we won't find complex life like humans, but it is our first step in understanding life beyond earth. >> so what exactly is it that you're looking for? >> well, take mars for example. for the last ten years, we've been following water. one of the things that you have to have for life is water, we believe. and with the many missions that we have, we now know there's signs or evidence of water on mars that's all over the place. and in fact, we've discovered some layers of water underneath the soil. it's an ice form, but it's a major...

Just shown how much better it could be. and it was really illustrated when you showed your huge file, versus the electronic records. and a lot of people are saying how is this possible. >> right. well, the reason why group health can operate the way that it does, they save money, they make patients happy is because they do certain things very efficiently. they have electronic medical records. all of their doctors are in one building. you're not running around the city seeing various doctors. the x-ray machines are there, all of that. the other reason why they're able to operate so efficiently,...

Europa than there is in the world, on earth. so consequently, that water which is being harbored underneath the ice shell may indeed contain all types of life. so we're anxious to go there. we're anxious to study it. and we're anxious to see how that life could survive over these billions of years. >> another potential target, a little closer in, saturn's moon of titan. what can we find there? >> well, titan is another fabulous world. it's got a hefty atmosphere. it also has -- it's the only body in the solar system beyond eartha actually has liquid on its surface. it has lakes maybe even as l...