will be higher than the ta skyscrapers in the world! We have used the wind to sa thousands of years, but the engines of today's big ships use diesel fuel, which comes from oil. However, some new passenger ships have both engines and sails. The sails on these modern ships are moved by computers so they can move and catch the wind, saving the ship a lot of fuel. Skysails are another great idea because you can use them with any ship even old ones. They fly about 200 metres above the ship and help to pull it through the water. How about sailing to work in a car that uses the power of the wind? The Greenbird looks like a plane or a boat, but moves on land. Sometimes it can reach 200 kilometres an hour! The Greenbird uses clever technology to move five times faster than the wind. The Netherlands is a country of windmills old buildings with sails that turn in the wind. The country's 1,200 windmills are hundreds of years old, and they are used for lots of things, like moving water and making machines work. Now, wind turbines that make electricity are appearing all over the Netherlands. For the people of the Netherlands, wind power is both the past and the future.