Soaring is a flight technique used by birds and aircraft to gain altitude without expending much energy. It involves riding on rising air currents, known as thermals, which are created by the uneven heating of the Earth's surface. This allows birds like eagles and vultures to glide for long distances while conserving energy. In aviation, soaring is practiced by glider pilots who use similar principles. They seek out thermals and other lift sources, such as ridge lift, to stay aloft. Soaring can be a competitive sport, with pilots aiming to cover the greatest distance or achieve the highest altitude using only natural lift.