The inspiring journey of the first fuel-free plane to circumnavigate the globe leads the way to a more “energy efficient” and sustainable world.

That’s the view of Captain Bertrand Piccard, co-pilot of the record-breaking plane, Solar Impulse.

The team behind the solar-powered flight, took 505 days to complete their extraordinary journey, landing in Abu Dhabi on Tuesday.

Captain Piccard is also a UN Environment Programme (UNEP) Goodwill Ambassador.

Basma Baghall, asked the Swiss-born captain, what the main lesson was of their epic flight.

Duration: 4’05”