A new 80-day itinerary by the UK's Responsible Travel company is swapping air travel for journeys by train and cargo ship. William William / Unsplash
A new 80-day itinerary by the UK's Responsible Travel company is swapping air travel for journeys by train and cargo ship. William William / Unsplash

Cutting down on carbon: British travel company launches 'responsible' flight-free trip about the world