Greta Thunberg, the Swedish teenager whose social media-savvy activism has inspired tens of thousands of students in Europe to miss lessons and protest for faster action against climate change, plans to take her message to America the old-fashioned way: by boat.

We’ve a lot to learn from the students who responded to Greta Thunberg’s call for a global strike to protest about accelerating climate change, writes Donal O’Keeffe.