cbs, katu. you can find me on social media.let me know who you are and what you would like to see on the show. i look forward to hearing from you. you can find more coverage on our website. thank you for joining me. captioning sponsored by wnet >> sreenivasan: on this edition for sunday, march 1: a look ahead to what's at stake on super tuesday. new concerns over the coronavirus outbreak. and in our signature segment: the legacy of photographer jim marshall lives on through his iconic imagery.s next on "wshour weekend." >> pbs newshour weekend is made possible by: bernard and irene schwartz. hsue and edgar wach iii. the cheryl and philimimilstein . a osalind p. walter. barbarpe zuckerberg. werles rosenblum. ry to live in the moment, to not miss what's right in front of us.