Michelin makes car tyres and guide books. Soon, it will help to make ships more environmentally friendly. About 2.5 per cent of the world's greenhouse gasses are from ships. Oil tankers, container ships and cruise ships use fossil fuels. Michelin has made giant sails. These will cut the CO2 ships produce by 20 per cent.

Sails are 5,000 years old. Michelin will use them on today's biggest problem – climate change. Sailors fill the new sails with air to get them to their full size. They are 280 square metres in size. Michelin thinks the sails will mean there is less CO2 in the air. It added that wind is a great fuel because it is free.