hepburn says r.n.a.could stop the next wuhan-like outbreak cold. >> hepburn: it's really beyond vaccines, that's our future. that's our next step. >> whitaker: shoot for the moon. >> hepburn: shoot for the moon. >> whitaker: some pentagon researchers are shooting higher. with the spread of dangerous new coronavirus variants, the army's dr. kayvon modjarrad is testing a revolutionary approach to stop them all. >> dr. kayvon modjarrad: we're trying to not just make a vaccine for this virus. we're trying to make a vaccine for the whole family of coronaviruses. this is the core of our vaccine. we engineer the spike so that we can attach it to this protein. >> whitaker: if his concept, now in clinical trials, proves successful, dr. modjarrad says in five years a single vaccine could defeat all coronaviruses. that means many common colds, the deadly strain causing this pandemic and thousands of others. is that, at this point, a dream? >> modjarrad: this is not science fiction. this is science fact. we have the

bay channeling her inner audrey hepburn as she have the yellow diamond and performs the classic "moonhenever you're going your way ♪ >> can't miss it yellow diamond you can see in that shot. she is the fourth person in history to wear it audrey hepburn and lady gaga also wore it 128 carats a lot there. >>> kelly clarkson returns with her hit talk show monday she's the queen of covers, but she did bring out one of the big guns for season three. chris martin, coldplay's lead singer he joined kelly on the couch to serenade the audience with classics, including this whitney houston one. ♪ i wanna dance with somebody i wanna feel the heat with somebody ♪ ♪ oh, i wanna dance with somebody with somebody who loves me ♪ >> good one. >> great >> that looks good. >> remember that time chris martin was here and he wanted to do the forecast? >> yes, he did he still can do it any time he wants. >>> mr. roker, what do you have in the weather department? >> until chris gets here, we are looking at nicholas making its way through the gulf coast summer like weather through the southwest and strong stor