Ari Trausti Guðmundsson (born 3 December 1948)[1] is an Icelandic geologist,[2] author, documentarian, broadcaster, journalist, lecturer, mountaineer and explorer.

He served as a mountain guide, TV- weather reporter, media presenter and producer and has planned nature and science exhibitions in Iceland, Paris and London and authored non-fiction books, fiction and poetry.

After that he has been working as a freelancer, predominantly occupied with being a consultant and lecturer plus promoting science, nature conservation and innovation in the media, including radio and television.

Simultaneously he has written dozens of books and produced, chiefly in cooperation with the film company Lífsmynd, a long array of television programs and documentaries.

[5] Ari Trausti has written numerous books on Icelandic nature, geology, volcanology, astronomy, environmental protection, travel, hiking and mountaineering.

He published his first collection of short stories in 2002, named Vegalínur (Road lines), for which he received the Halldór Laxness Literary Prize in 2002.

He participated in radio and TV-programs on nature and science in Norway, Denmark, Germany, the Netherlands, China, US, Russia and Britain and was one of the experts lecturing in Europe on the Eyjafjallajökull eruption in 2010.