Film director Louis Garrel and actress Laetitia Casta present 'La Croisade' at the Cannes Film Festival, which has been selected for the ‘cinema for the climate’ category. The new release explores the climate emergency, which is a topic that is “so serious, it is so hard and so overwhelming so in order to speak about it, it was necessary to use humour”, explains Garrel. IMAGES AND SOUNDBITES