The challenges & progress in Human Powered Flight

What does it take to fly an HPA: the history of the sport and where you can do it: the engineering challenge and the human factors to overcome. What it is like and how much energy it takes to fly, the previous research and the best approaches and common materials to build an HPA. What can go wrong in flights, and how much control you have and the aircrafts' present limits. The events in Human Powered Flying, and the 4 outstanding prizes in the sport yet to be won (total Prizes in the UK add up to $270,000). What does success result in and the real world application of this technology in High Altitude Autonomous aircraft (eg Airbus Zephyr).