Browse "Science & Technology"

Stephen Lett, psychiatrist (b at Callan, Ire 4 Apr 1847; d at Kingston, Ont Oct 1905). Having served as assistant medical superintendent of the insane asylums in Malden and London, Ont, 1870-77, he lost out to R.M. BUCKE for the post of London's medical superintendent.

Steven Glenwood MacLean, FRCGS, physicist, astronaut (born 14 December 1954 in Ottawa, ON). Steve MacLean was among the first astronauts recruited in Canada and in 1992 became the third Canadian to fly in space. On his second mission to space (2006), he became the first Canadian to operate the Canadarm2 robotic arm and the second to complete a spacewalk, after Chris Hadfield. He has also contributed to the country’s space programs as director general of the Canadian Astronaut Program (1994–96) and president of the Canadian Space Agency (2008–13).

Steven Guilbeault, PC, MP, ecologist, author, columnist and lecturer (born 9 June 1970 in La Tuque, Quebec). In 2009, French magazine Le Monde recognized Guilbeault as one of the world’s 50 leading figures in the field of sustainable development. The Cercle des Phénix de l’environnement du Québec also recognized Guilbeault the same year. Guilbeault earned recognition through his work with Greenpeace and as a co-founder of Équiterre. He also served as a columnist for various media outlets, including Métro, Radio-Canada, La Presse and Corporate Knight magazine. During the 2019 federal election, Guilbeault was elected the Liberal Member of Parliament for Montreal’s Laurier─Sainte-Marie riding. Shortly thereafter, Prime Minister Justin Trudeau appointed Guilbeault to his Cabinet as minister of Canadian heritage.

Sydney Murray Friedman, scientist, scholar, physician (born 17 February 1916 in Montréal, QC; died 16 February 2015 in Vancouver, BC).

Sylvia Olga Fedoruk, physicist, educator, lieutenant-governor of Saskatchewan (born at Canora, Sask 5 May 1927; died at Saskatoon, Sask 26 Sep 2012).

Terence Dickinson, astronomer, writer, editor (born 1943 in Toronto, ON).

Rybczynski's quest for the origins of this most common tool did not prove easy. Some tools, such as the frame saw, had obvious origins since they were developed in a logical response to a particularly vexing problem.

Theodore George Gustavus Harwood Drake, physician, historian, collector (born 16 September 1891 in Webbwood, ON; died 28 October 1959 in Toronto, ON). Drake is perhaps best known for his contributions towards the development of the infant cereal, Pablum.

Theodore Lionel Sourkes, OC, biochemist, neuropsychopharmacologist (born 21 February 1919 in Montréal, QC; died 17 January 2015 in Montréal, QC). One of Canada's great scholars, he became professor of psychiatry at McGill in 1965 and director of the neurochemistry laboratory at the Allan Memorial Institute of Psychiatry; in 1970 he was appointed professor of biochemistry, retiring in 1991. He was a prime mover in the establishment of biochemical psychiatry as an accurate discipline.

Dr. Theresa Tam, BMBS, physician, Chief Public Health Officer of Canada (born 1965 in Hong Kong). Dr. Tam is Canada’s chief public health officer, the federal government’s lead public health professional. She has expertise in immunization, infectious diseases and emergency preparedness. She has served on several World Health Organization emergency committees and has been involved in international missions to combat Ebola, MERS (Middle East respiratory syndrome) and pandemic influenza. She has also worked toward the eradication of polio. Dr. Tam became widely known to Canadians through media briefings as she led the medical response to the novel coronavirus and the COVID-19 pandemic.

Thomas Alfred Patrick, physician, legislator (b at Ilderton, Ont 23 Dec 1864; d at North Battleford, Sask 6 Sept 1943). After graduating from Western in 1888, Patrick practised medicine and surgery in Saltcoats, Saskatchewan, until 1894 and in Yorkton, Saskatchewan, until 1939.

He served as chief engineer of the Montréal Water Board and designed the water-supply system for Hamilton, Ont (1859), as well as the waterworks in Ottawa (1874). His Hamilton Pumping Station, with its working Gartshore beam engines, has been declared a national historic site.

Thomas Drummond, botanist, (b in Scot c 1780; d at Havana, Cuba early Mar 1835).

Thomas Leopold Willson, "Carbide," inventor (b 1860; d at New York C 20 Dec 1915). Propelled by curiosity, Willson was a chronic inventor gifted in both recognizing the potential of his discoveries and funding their development. He obtained over 70 patents in Canada.

Thomas Neill Cream, doctor, murderer (b at Glasgow, Scot 1850; d at London, Eng 15 Nov 1892). Educated in medicine at McGill, Cream was responsible for a string of murders in Canada, the US and Britain. He was also a thief, arsonist, blackmailer and illegal abortionist.

Thomas Sterry Hunt, chemist, geologist (b at Norwich, Conn 5 Sept 1826; d at New York C 12 Feb 1892). After studying at Yale under Benjamin Silliman Jr, Hunt joined the GEOLOGICAL SURVEY OF CANADA in 1846 as a chemist and mineralogist.

Thomas Sydney Leeson, anatomist, electron microscopist (born 26 January 1926 in Halifax, England; died 26 July 2006 in Edmonton, AB).

​Thomas-Louis Tremblay, soldier, commander and civil engineer (born 16 May 1886 in Chicoutimi, Québec; died 28 March 1951 in Québec City, Québec).

Thorbergur Thorvaldson, "TT," cement chemist (b in Iceland 24 Aug 1883; d at Saskatoon 4 Oct 1965). Settling with his parents near Gimli, Man, he went on to attend U Man and Harvard (MSc, PhD). In 1919 he became head of the dept of chemistry at U Sask, and in 1945 the first dean of graduate studies.

Tillson Lever Harrison, physician, surgeon, army officer, adventurer (b at Tillsonburg, Ont 7 January 1881; d near Kaifeng, China, 10 January 1947). Also known as a writer, raconteur and humanitarian, Tillson Harrison has been touted as Canada's second Norman BETHUNE and the model for Indiana Jones.