#solar plane
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…