I recently came across this interview in the Asia Sentinel with Ogyen Trinley Dorje, one of the two young lamas recognized as the 17th Karmapa. It is a great interview and I recommend reading the whole thing, but this passage in particular jumped out at me.
The distance between humans and the environment is becoming wider and wider and likewise, we are bringing more and more harm to the environment by using it indiscriminately. Actually, before using the environment, we should think; it is very important to think of the consequences of indiscriminate destruction of the environment. Lack of mindfulness is creating a lot of problems. Therefore, it is very important to be mindful of what we are using now and from where those resources come from. For example, sweet cheeps of birds and lush green forests are beauties; they are not something that we have created; rather those are naturally created beauties. However, if we cut down forests and harm animals, we are depriving ourselves of the natural beauties we enjoy; it is as if we are destroying the very sounds, smells and good tastes that we enjoy. Therefore, it is very important to be mindful.
Read the complete interview here.