Aerospace Monitoring

(AP) — The two Swiss pilots taking turns to fly a solar-powered airplane around the world said Sunday the endeavor is not only a demonstration of the importance of renewable energy but also of the many challenges the human body can endure. Pilot Bertrand Piccard completed a risky, three-day flight across a great expanse of the Pacific Ocean while sleeping only 20 minutes at a time inside the plane's tiny cockpit with no heat or air conditioning and while having to keep constant contact with…