Common-pool resources and other shared resources frequently suffer from overextraction/overuse and associated negative externalities. In this paper we design a framed laboratory experiment on downstream water pollution to investigate (a) the importance of framing in determining the behavior of upstreamers regarding the negative externalities, and (b) the potential of downstreamers to influence the choices of upstreamers using non-monetary sanctions and rewards, alleviating the need for intervention by the local governments and regulatory institutions. Our results show that framing has a significant impact on the behavior of subjects. Subjects behaved more profit-oriented in the self-interest framing and more egalitarian in the empathy framing. In addition, we show that nudging subjects to “walk in the shoes of others” significantly increased empathetic behavior. Lastly, negative emotional feedback is a powerful tool for changing behavior of subjects towards more environmentally friendly and empathetic behavior. Interestingly, positive emotional feedback is counterproductive in that it instead decreases environmentally friendly and empathetic behavior. In general our results indicate that explicit emotional feedback, even though not expressed by everyone, works similarly to the implicit appeal to emotions through framing.