Piccard has taken up a mission to find such 1,000 efficient solutions since he successfully completed the first zero-fuel electric and solar aircraft's circumnavigation across the globe.
Piccard launched the World Alliance for Efficient Solutions at COP23.
The charges were ultimately dropped because
Piccard did not show up to court to testify against her then-husband.
Piccard and his team faced many technical problems, especially with the design of the batteries.
The plane, not heavier than a car but having wingspan of a Boeing 747, was being flown on 35,000 km trip in stages with two pilots
Piccard and Andre Borschberg (also Swiss) taking turns at the controls.
This is an historic day for Captain
Piccard and the Solar Impulse team, but it is also an historic day for humanity," said the UN Secretary-General.
Piccard and fellow pilot Andre Borschberg took turns flying solo for long days and nights, taking 20-minute naps every two hours.
It was also delayed for more than a week in Cairo ahead of its final flight when Mr
Piccard fell ill, and due to poor weather conditions.
Let's take it further,'' Mr
Piccard said, arriving into Abu Dhabi to cheers and applause.
Summary: The solar-powered plane first took off from Abu Dhabi in March 2015; for the return leg, Bertrand
Piccard is in pilot's seat
That plane flew across the Pacific Ocean, with
Piccard's fellow pilot Andre Borschberg manning the controls for 4 days, 21 hours and 51 minutes as he flew the craft from Nagoya, Japan, to Honolulu in Hawaii.