You may lack this key to success - or maybe I just chose the wrong list of topics. If there are other
topics you feel you have something interesting to say about, try one of those!
Thanks for your advice and encouragmenent. I'll think about it.
Meanwhile I contacted the press offices of Desertec and Alpha Ventus, the Desertec people have sent me some links to several papers etc. I'll have a look at what it's all about.