#cleantechsUnmoderated tagAll postsExplore CommunitiesTrending CommunitiesSteemitCryptoAcademyNewcomers' Communityআমার বাংলা ব্লগKorea • 한국 • KR • KOSteem AllianceSTEEM CN/中文Comunidad LatinaWORLD OF XPILARBeauty of CreativitySteem POD TeamTron Fan ClubAVLE 일상#cleantechsTrendingHotNewPayoutsMutedwiocor (26)in #cleantechs • 9 years agoSolarStratos plane. Going into the stratosphere!Swiss adventurer unveils incredible stratospheric solar plane. Founder of SolarStratos and pilot Raphael Domjan - "Our…
