Ethics of nature

According to De Waal, we have clear evidence from multiple sources that humans share advanced emotions such as empathy with other animals. Explain this. How might this new understanding change the way we approach the natural world? How does it change the way you feel about nature?
Greene describes humans as being inclined towards Moral Tribes, or tribalism, in part by the kinds of moral emotions we have. Why do the types of moral emotions we possess incline us toward tribalism, according to Green? Have you encountered this in your own life? What can be done, given our evolved natures, to reduce the negative effects of tribalism?