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parents and children. three months after an 18-year-old killer gunned down two teachers at robb elementary school. no teachers or staff are returning to robb this more than. they're absorbed in other schools. at least 15 schools showing support by wearing uvalde's maroon colors. beefed up protection at several uvalde schools including fences and comfort dogs on hand and parents on hand as well. some say the district says has not been enough. >> cnn's shimon prokupecz is live. for now, shimon, parents and kids will take that walk or drive to school for the first time. >> reporter: a...

Unprecedented level of detail and color. polo sandoval joins us now. first of all, what is it? and secondly, what are we looking at here? >> john, it's beyond the comprehension of your tv and my tv. people that will actually appreciate the incredible resolution here because it's the "titanic" of anything that we've seen of the 110-year-old ship wreck. trying to keep up with it right now. new footage twice as clear as a 4ktv. the company carries out dives to the wreck with experts, scientists and those who can afford a $250,000 opportunity. there is hope that the new footage that was released w...

is zero room for error. about 17 minutes from now, if all goes as planned, the rover will touchdown on the martian surface. but it takes 14 minutes for a signal to travel from mars to earth, so best case scenario, confirmation will come in about 31 minutes. we expect pictures around 2 a.m. eastern. now, joining us from the laboratory in california. in moscow r where russian space officials are closely following the development and science correspondent david brodie joins us from edge water, new jersey. but first we will go to john zarrella there live in pasadena. john, we are about t...