Scientists from Oslo

Dan Laksov (10 July 1940 – 25 October 2013) was a Norwegian-Swedish mathematician and human rights activist. He was primarily active within the field of algebraic geometry.

Trygve Dehli Laurantzon (20 March 1902 – 21 May 1975) was a Norwegian agronomist and newspaper editor.
He was born in Kristiania as a son of Major General Jacob Ager Laurantzon (1878–1965) and Bergljot Dehli (1878–1968). On the maternal side he was a grandson of jurist and organizational leader Ole Dehli, and a nephew of Halfdan Gyth Dehli.
In 1928 he married Johanne Sandberg (1903–1985), a daughter of farmer, officer and politician Ole Rømer Aagaard Sandberg (1865–1925). As such he was a brother-in-law of Ole Rømer Aagaard Sandberg, farmer and MP from Furnes. Laurantzon died in May 1975 in Hamar.During the German occupation of Norway he edited the magazine Norsk Jord from 1941 to 1945. During the last phase of the Second World War he edited the newspaper Nationen for two and a half months, and headed the collaborationist Quisling regime's Ministry of Agriculture for a short period from April to May 1945. In the legal purge in Norway after World War II he was convicted of treason and sentenced to fifteen years of forced labor, only to be released in 1950.

Johan Ernst Fredrik Føyn (28 March 1904 – 2 November 1984) was a Norwegian chemist and oceanographer. He was born in Kristiania. He was assigned professor of oceanography at the University of Oslo from 1964. His research centered on radioactivity of ocean waters, and on pollution of the oceans. He designed a method for electrolytic cleaning of sewage.

Sverre Martin Fjelstad (born 17 October 1930) is a Norwegian zoologist, photographer, non-fiction writer and producer for radio and television. He was born in Oslo. He is probably best known to the public for the series Naturmagasinet, which was aired by the Norwegian Broadcasting Corporation between 1966 and 1974.

Sjur Refsdal (30 December 1935 – 29 January 2009) was a Norwegian astrophysicist, born in Oslo. He is best known for his pioneer work on gravitational lensing, including the Chang-Refsdal lens.

Per Engebret Stockfleth Enger (24 February 1929 – 19 November 2018) was a Norwegian zoophysiologist.
He was born in Oslo as a son of painter Erling Enger (1899–1990) and office clerk Aud Stockfleth (1899–1987). He took the dr.philos. degree in 1963 on the thesis Single unit activity in the fish auditory system. He was hired at the University of Oslo in 1956, and served as a professor of zoophysiology from 1975 to 1994. He is a fellow of the Norwegian Academy of Science and Letters.

Rolf Yngvar Berg (2 December 1925 – 25 August 2018) was a Norwegian botanist.
He was born in Oslo. He took the dr.philos. degree 1962 on the work Studies in Liliaceae, tribe Parideae. He was a curator at the Botanical Museum of Oslo from 1956 to 1962, professor of botany at the University of California, Davis from 1962 to 1965 and at the University of Oslo from 1965 to 1994. He has been a corresponding fellow of the American Botanical Society from 2003, and a fellow of the Norwegian Academy of Science and Letters. He died at the age of 92.

Hans Holtedahl (8 December 1917 – 24 February 2001) was a Norwegian geologist. He was a professor of geology at the University of Bergen.

Eilif Dahl (7 December 1916 – 17 March 1993) was a Norwegian botanist and politician for the Labour Party.
He was born in Kristiania. His interest in lichens started with an early friendship he developed with Professor Bernt Lynge. Thanks to Lynge, Dahl was able to take part in the 1936 Heimland botanical expedition to eastern Svalbard and Kong Karls Land, and then a Danish-Norwegian expedition to Greenland the next year. His collections from these excursions were used as part of his cand. real. thesis that he presented to the University of Oslo in 1942. According to Hildur Krog, his most important lichenological contribution was his 1950 work Studies in the Macrolichen Flora of SW Greenland, which was a revised version of his thesis.Dahl was appointed professor of botany at the Norwegian College of Agriculture from 1965. His research interests centered on Arctic plants and lichen, plant geography and ecology. He was also a politician for the Labour Party, where he was a board member from 1965 to 1977. During the German occupation of Norway he took part in resistance work, and was a member of the clandestine intelligence organization XU. After fleeing to neutral Sweden and later to the United Kingdom, he served with the Norwegian High Command in London.The lichen genus Eilifdahlia, and its type species, Eilifdahlia dahlii, are both named in his honour.

Lars Walløe (born 20 May 1938) is a Norwegian academic, chemist, physiologist, and scientific adviser to the Norwegian government. He was the head of the Norwegian Delegation to the Scientific Committee of the International Whaling Commission, and he was honored by the Japanese government for having "contributed to the promotion of Japan’s policy in the field of fisheries". From 2002 to 2008 Walløe served as the president of Academia Europaea.