Solar Impulse 2, the solar-powered plane flying around the world on zero fuel, landed in Cairo on Wednesday morning in its second-to-last stop. The plane took off from Seville, Spain on Monday and landed in the Egyptian capital around 50 hours later, after having passed through Italian, Greek, Tunisian and Algerian airspaces. Prior to landing in Seville, the plane flew across the Atlantic Ocean after taking off from New York. The transatlantic flight took 71 hours to complete at an average speed of 76.7 kilometers per hour. The final leg of the round-the-world marathon will see the solar-powered plane traveling from Cairo to Abu Dhabi, where it first took off in March 2015. André Borschberg, Solar Impulse’s co-founder, CEO and co-pilot, took to Twitter after landing in Egypt to stress on the importance of using clean energy and encouraging further development of clean technologies. “It’s extraordinary that people are starting to find @solarimpulse normal when 13 years ago it was thought impossible,” the Swiss entrepreneur said. W/ this pioneering adventure, we want to encourage people to use #cleantechs on the ground to stop wasting #energypic.twitter.com/HylyXnjMNy — André Borschberg (@andreborschberg) July…
