Want to shrink your carbon footprint this summer? Try slow travel!

Summer holidays are in full swing, but how can we travel without polluting? One option is sailing across the Mediterranean. A French cooperative is offering an alternative to flying or taking the ferry with a new sailboat route between mainland France and Corsica. It's a long, slow and expensive adventure, but it's the greenest way to get there. Aurore Cloé Dupuis and Alexandra Renard tested "slow travelling" for us in this edition of Down to Earth.