. >> reporter: later brian became an investor and when he took the stage for the taylor hawkins tributeor. >> reporter: unforgettable voice. as for the future of ac/dc sounds like that's tbd according to brian. the band did spend a few weeks a while back rehearsing for a possible tour that was iced by the pandemic. a lot of fans would love to get on that "highway to hell" once more. "the lives of brian" hits bookstores today, guys. >> thank you, chris. >> you sold that, chris. >> sure did. let's go to ginger in switzerland. >> reporter: yes, thank you, george. you know, we've been talking about melting glaciers and i think it's really critical to remember that europe had its warmest summer on record. those records go back to 1880. now, yesterday, we saw how quickly this landscape is changing. that's my crew trying to traverse a river that changed its own riverbed within a week. that's how quickly ice and all of this rock that melts so quickly can really change. now, look at also, this is a crevasse and this is why, as you go up the glacier, and we saw a couple trying to do it earlier. y