Australia, Atacama, Mojave, the Namib, the Kalahari, the Gobi and the Sahara. Crossing the world's seven biggest deserts on bicycle and alone is some feat! And the cyclist and journalist Sergi Fernández has done it. A four-year adventure covering a distance of over 30,000 km. Now, setting the scene in Putget Park, he tells us about his next journey.