Airship research

Airship research

http://www.treehugger.com/aviation/check-out-the-aeolus-airship-human-powered-blimp-can-stay-aloft-for-two-weeks.html

http://worldbuilding.stackexchange.com/questions/8485/how-could-a-sail-powered-airship-work

https://www.quora.com/Could-airships-sail-like-sea-going-sailing-ships

 http://newatlas.com/zeppy3-sail-balloon-mediterranean-crossing-attempt/15552/

Super black paint

 http://newatlas.com/vantablack-s-vis-spray/42298/?li_source=LI&li_medium=default-widget