Many young people around the world are growing fed up with the lack of urgent action addressing climate change. That’s why 18-year-old British Bangladeshi environmentalist Mya-Rose Craig recently decided to protest in a way that would catch a lot of attention: by going all the way to the Arctic Circle, where sea ice is melting at an alarming pace. Craig—who is also known online as “Birdgirl” because of her popular bird-watching blog—traveled to her destination by ship from Norway. Once there, she spent five hours on the ice, holding a sign that read “Youth Strike for Climate.” (Craig has participated in Fridays For Future, the global strike movement started by 18-year-old activist Greta Thunberg, in which students skip school to demand action on climate change.) With her Arctic protest, Craig hopes to spur lawmakers to set up ocean sanctuaries­—and to inspire other teens to speak up. “I think the climate strikes have been revolutionary in terms of giving young people a voice, to show people in power where our priorities lie,” Craig wrote in a recent opinion article. “We have to act, and we have to act now.”