Ian Shive, conservation photographer

From Current TV's blog [emphasis mine]:

The place where the two diverge is that nature photography takes no action – the image is for yourself or for a magazine. Conservation photography takes the process a step further by taking that same image and using it for advocacy, education and to bring awareness or aid to the subject or ecosystem depicted in the image. It’s sort of like giving back to the landscape that you’ve borrowed from as a photographer.

Be sure to check out his inspiring portfolio at his website.