The Solar Impulse project of Betrand Piccard and pilot André Borschberg is aiming to let a solar powered plane circle the world by 2014 at the latest. In his latest test flight – the first international one – Borschberg headed from Payerne airport in Switzerland to Brussels in Belgium.

GLOBAL IDEAS talked to André Borschberg while he was cruising 3,800 meters abover Switzerland. Listen to what he had to say: