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08
MayWorld Migratory Bird Day
The Second Weekends of May and October are events observed twice each year as World Migratory Bird Day to focus world attention on the need to protect migratory bird populations, their habitats, and their international flyways. Through exchanges of … Continue reading →
22
AprEarth Day
April 22, Earth Day, is celebrated around the world as tens of millions of people make time to attend their environment. Thousands of governments – from local to regional to state, provincial or federal – plan awareness campaigns and activities … Continue reading →
Tag Archives: Marie Tharp
Graphic Plots
On July 30, 1920, Marie Tharp was born in Ypsilanti, Michigan. A pioneering oceanographic cartographer, she mapped the ocean floor and co-discovered the Mid-Oceanic Ridges, along with her colleague Bruce Heezen, Columbia University’s team leader of ocean ridge mapping. As … Continue reading
Posted in On This Day
Tagged cartography, Columbia University, Heezen-Tharp, July 30, Marie Tharp, Mid-Atlantic Ridge, Mid-Oceanic Ridges, ocean cartography, On This Day, plate tectonics, The Roberta Bondar Foundation
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