As an engineer very interested in clean energy and aviation, Karl worked on experimental Tokamak fusion reactors at Princeton, hydrogen energy storage, graphene energy storage, and more recently on hypersonic jet engines.  As a licensed glider and powered pilot, Karl has combined his skill sets to develop electric and hydrogen-powered airplanes.  He hopes to help the world to advance itself with sustainable clean energy, so that future generations can enjoy the wonders of the natural world as we did. Karl lives in Olympia, Washington, USA.

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Karl said, 'I'm passionate about the development and implementation of clean energy  for mass transportations in aviation - which is what the Freedom Flight Prize is there for - enabling people across the globe to continue to explore our amazing World.'