Camille Seaman is an American photographer who applies portraiture strategies to capture the changing natural environment. I find her work inspiring. Not just on an environmental conservation level, but a creative one as well.
A few years ago, I saw a photo editing tutorial she gave on the use of dodging and burning (lightening and darkening respectively) that had a large impact on my editing style.
Check out her portfolio via the link below. My personal favorites are her "Big Cloud" and "Melting Away" series.