The History of Terrorism
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1889 Lorentz-FitzGerald Contraction (Length Contraction)
1905-1915 Theory of Relativity
Spacetime
Space
Places
Environments
Atmosphere of Earth
Ionosphere
Ozone Layer
At 3 minutes.
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1975 Johnson was one of the first business leaders to recognize the danger to the Earth's ozone layer from chlorofluorocarbons (CFCs), a then-popular propellant in aerosol products, voluntarily banning the substance from all of S.C. Johnson's products.
2019 NASA - 2019 Ozone Hole is the Smallest on Record Since Its Discovery
Ozone Layer Screens Out Ultraviolet Rays