Dear Sue,
Beautiful as always! I like #15 the best. I am not enthusiastic about the H in #16 and 17 but it was a clever idea and you pulled it off really well. I am a climate change and air quality consultant and I work on energy and (Cleaning up dirty old power plants) and transportation systems - but I don't do water or solar energy so while I love #15 - it is gorgeous - I think it might be a little misleading - as though I am a traditional environmental consultant - but I am still thinking about it because it is so pretty. Any other ideas that give the sense of energy, clean, global (like the whole earth), atmosphere, motion, etc.? I like the little curve of the earth in the MP logo you did for us - maybe using that little curve too?? Just some thoughts - I am, as always, amazed by your work!