The future
A century on from the first powered flight, man's vision of flying in the future is as vivid as ever.
Demand for air travel will continue to grow, but skies are becoming more crowded - and there is a growing realisation that the Earth's resources are finite. The double-decker Airbus A380 (top), due to go into service in 2006, can carry far more people, reducing the number of journeys.
In contrast, hypersonic scramjets (bottom), which are already being tested, could eventually reach Sydney from London in 90 minutes. But it could be well into the second century of flight before they become reality...