War has historically driven scientific and technological progress by creating needs that stimulate innovation. Throughout history, wars have prompted advances in areas such as chemistry through the development of explosives, astronomy through improvements to navigation, and metallurgy through advances in weapon manufacturing. Even today, wars continue to spur new technologies across many fields as militaries pursue superior weapons, equipment, and strategies. Future armament projects now seek innovations like powerful electromagnetic guns, high energy lasers, and cavitation torpedoes, though it is hoped that such technologies will ultimately be applied to peaceful ends.