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freak out about that picture? those are 4 billion-year-old waves. like seeing the ripping on the ocean. this is another planet. these are -- those are 4 billion years old! not even dinosaurs here yet. >> i like the enthusiasm. >> what matters is that it is concrete evidence. mars right now is a frozen desert once had oceans or huge lakes and the water rippling up on the surface. this is the perfect place for life to get started. this is evidence that mars had climate change. maybe under the ground it's managed to hang on. maybe a couple meters below the surface. >> that is prehistori...

affecting our kids. max page. or should i call him mini darth vader. you remember max page. we introduced you to him last we' week. he is 6 years old and on his third pacemaker. he took capitol hill by storm this week. max and his family came to washington with a group of kids to put the pressure on lawmakers. >> we are one family from california trying to make a difference. >> to protect medicaid coverage for children and preserve funding for the programs that train half of the pediatricians. they met with lawmakers from both parties. >> i want to help my hospital. >> so, it is hard...