On October 5, 1911, botanist, educator, and ecologist Pierre Mackay Dansereau, CC GOQ FRSC, was born in Montréal. A working botanist-theorist, he developed defining insights into ecology through a lifetime of field research from the Alps to the Arctic and teaching at 20 universities…
On September 18, 2023, the Slumgullion Earthflow continues moving downhill from Mesa Seco… a slow, thousand-year-old journey! Produced in tectonic activity, the San Juan Mountains formed tens of millions of years ago in southwest Colorado. As climate altered the volcanic residue in the Mesa…
On September 11, 1847, American astronomer Mary Watson Whitney was born. She excelled in mathematics and nature studies. Whitney was one of Vassar’s first students in the college’s opening year and one of its first students in its new department of astronomy. In a…
On April 7, 1795, France introduced the metric system of measurement with the original units for length, area, volumes and mass. The main feature of the metric system is the standardized set of interrelated base units that include a standard set of prefixes in…
On April 12, 1961, Soviet cosmonaut Yuri Gagarin became the first person to travel into space. He made a 108-minute orbital flight in the fully automated Vostok 1 space capsule. Gagarin did not land in his space capsule. Vostok 1’s reentry into the atmosphere…
On February 22, 1857, German physicist Heinrich Rudolf Hertz was born. He was a student and protégé of the great Hermann von Helmholtz. Hertz began his career as a university lecturer and quickly established himself as an accomplished speaker. In his lab, Hertz demonstrated…
On February 17, 1858, educator, illustrator, biologist, photographer, and writer Margaret Warner Morley was born. After graduating as a teacher in New York City, she studied at what is now the Illinois Institute of Technology in Chicago, and the Marine Biological Laboratory in Woods…
On November 29, 1803, mathematician Christian Andreas Doppler was born in Austria. Although primarily a teacher of mathematics, he also studied astronomy and eventually became the Director of the Institute of Physics at the University of Vienna. The years in between were filled with…
On October 24, 1908, Canadian geologist and geophysicist John Tuzo Wilson, CC, OBE, FRS, FRSC, FRSE was born. After academic studies on three continents, a stint with the Geological Survey of Canada, and the Royal Canadian (Army) Engineers, he taught geophysics at the University…
On September 9, 1953, Canadian military officer Major Deanna (Dee) Marie Brasseur was born. Brasseur and corps colleague Captain Jane Foster were the first two female fighter pilots in the Canadian Armed Forces. This also made them the first two female fighter pilots in…