Watch VoirFilms. Acclaimed educator and "Science Guy" Bill Nye realizes the reason he is feeling down is because he is in fact suffering from "climate change grief." With a little help from Hollywood action star and environmental advocate former California Gov. Arnold Schwarzenegger, Nye delves into the various manifestations of denial, anger, bargaining, depression and acceptance that represent not only the clinical stages of grief, but also the shared emotions that people exhibit in relation to the stark realities of climate change.