sentences:  He writes on media anthropology; visual/digital ethnographies; citizens' media; Indigenous media and communication rights in Chile and Latin America; documentary cinemas; environmental communication; climate change.His recent work focuses on Antarctica where he has developed pioneering ethnographic work since 2011.In 2015 he completed the feature length speculative documentary "Nightfall on Gaia" shot entirely in Antarctica and which had its international premiere at the 14th RAI International Festival of Ethnographic Film (Bristol, June 2015).