Swedish activist Greta Thunberg marched with 10,000 protesters in the Swiss city of Lausanne on Friday and demands action. She warned leaders, “You have not seen anything yet”.

In her brief speech, Greta noted that we had entered a new decade, and there are no signs whatsoever that real climate action is coming. This inaction, she says, “has to change.” She is taking this message with her to Davos next week.

Young people have been striking every Friday for over a year. They are fighting for their right to a future.