Around the world in a sun-powered plane
Swiss adventurer Bertrand Piccard has been dreaming for years of becoming the first pilot to circumnavigate the earth using solar energy alone. The dream has come one step nearer to reality with the unveiling of the Solar Impulse, the prototype of a plane that has taken six years to design and build. (Julie Hunt, swissinfo/SF)
This content was published on July 1, 2009
Contributions under this article have been turned off. You can find an overview of ongoing debates with our journalists here. Please join us!
If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at email@example.com.