"I told myself that I had to change my way of life," says Benjamin de Molliens, who describes himself as an "eco-adventurer". A few years ago, this man from Marseilles was a salesman in Silicon Valley, but then he decided to radically change his lifestyle. He is now trying to limit his carbon footprint as much as possible, and is trying to change attitudes with his "zero expeditions", which he shares on his social media. IMAGES AND SOUNDBITES