luisa: hi, nicholas, it's luisa, luisa neubauer from the climate strikes. ood. like, the usual mess. barbara: by anyone's standards it's a punishing schedule, with much of the work done on the go. [luisa speaking foreign language] luisa: i'm traveling so much, and i'm always on my phone, which is so annoying. every single--like, every minute that i'm not on my phone is a minute that i have to spend on it some other time. [female speaking foreign language] barbara: a photo shoot for a microplastics pollution campaign featuring a fake nosebleed wouldn't be everyone's idea of downtime, but it allows luisa a rare moment of calm. luisa: like, people always ask me, like, "how do you feel about the whole cture-taking thing?" and in a weird sense it's, like, very, very, very nice, because i just for once don't have to talk. barbara: the strikers say there's no time to lose if there's any chance of meeting the ambitions of the paris agreement. that's the 2015 un-brokered deal under which member states pledged to endeavor to limit global warming to 1.5 degrees celsius