NSTEM provides a comprehensive list of important STEM Dates as context for STEM events throughout history. Your NSTEM membership unlocks the complete timeline.
- Important STEM Dates
- Important STEM Years (Periods)
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March 24th, 1989
The Exxon Valdez tanker runs onto a reef in Alaska’s Prince William Sound, dumping 76,000 tons of crude oil. The spill, the largest ever in the United States, covers more than 5,100 kilometers of pristine coastline with oil and kills more than 250,000 birds.
April 28th, 1986
One of the four reactors at the Soviet Union’s Chernobyl nuclear power plant explodes and completely melts down. The explosion sends radioactive particles as far away as Western Europe, exposing hundreds of thousands of people to high levels of radiation.
September 16th, 1987
The Montreal Protocol on Substances that Deplete the Ozone Layer is adopted to support the phasing out of production of a number of ozone-depleting chemicals.
October 12th, 1982
The U.S. Environmental Protection Agency and the U.S. National Academy of Sciences release reports concluding that the build-up of carbon dioxide and other “greenhouse gases” in the Earth’s atmosphere will likely lead to global warming.
December 28th, 1973
Chemists Sherwood Rowland and Mario Molina publish their landmark findings that chlorofluorocarbons (CFCs) can destroy ozone molecules and may threaten to erode the Earth’s protective ozone layer.
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1922
1922
First Female Electric Engineer
Edith Clarke becomes the first employed female electrical engineer in the United States
1956
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