The document discusses the history and development of parachutes from their conception by Leonardo Da Vinci to modern usage. Da Vinci designed one made of linen but it took 500 years for someone to test it. Adrian Nichols built a prototype based on Da Vinci's design and successfully deployed it in 2000. Modern parachutes are made of light, strong materials like nylon and include additional safety features like harnesses for controlled descents from aircraft, military operations, and recreational skydiving and parasailing.