Slogans include "There's no Planet B", "Make Love Not CO2" and "Bla bla bla, act now!" From the Central Station pupils will be heading for the Koningsplein, the Luxemburgplein and back to the Central Station via Madou.

The schoolchildren grouped in "Youth for Climate" are eager to see politicians work on a binding climate plan that has the goal of limiting global warming to 1.5°C. The children are receiving the support of "Grandparents for the Climate".

Not all participants are playing truant. Pupils from the Gentbrugge Atheneum in Ghent are participating as part of an educational outing. 120 pupils headed for Brussels this morning accompanied by teachers and school head.