This is not directly answering your query but you might sometimes be surprised at the positions available at major companies that work towards your goal of natu

This is not directly answering your query but you might sometimes be surprised at the positions available at major companies that work towards your goal of nature conservation. For example, I had a stint at Siemens working on an project that managed customer site environments. This meant doing things to help them conserve energy and helping them save money by reducing power waste. I am guessing Siemens doesn't come to mind as an environmental pioneer in spite of their work on wind power, etc. but there you are: it was functionally one of the more gratifying jobs I had.