Air pollution in Pittsburgh, 1940.

Yes, well the skyscrapers were replaced in the 70’s, but actually there was a huge issue back in the 1990s, the first time many of us heard the term “Eminent Domain” when the mayor, Tom Murphy attempted to tear down the “Fifth and Forbes

Neil deGrasse Tyson, American astrophysicist, cosmologist, author, science communicator, and television host, (at right) at the University of Texas pursuing his masters in 1980. His friends are astronomer Steve Kawaler and Jacqueline Green, a scientist at NASA’s Jet Propulsion Laboratory.

Research publications Twarog, Bruce A.; Tyson, Neil D. (1985). “uvby Photometry of Blue Stragglers in NGC 7789”. Astronomical Journal 90: 1247. doi:10.1086/113833 Tyson, Neil D.; Scalo, John M. (1988). “Bursting Dwarf Galaxies: Implications for Luminosity Function, Space Density, and Cosmological Mass Density”. Astrophysical Journal

Wyoming, USA, 1954 – by Elliott Erwitt

The key word is modern! The early diesels were much weaker with less tractive effort. The image is an Ice cooled (block ice, ya know the hard water that is cold) Fruit Express, high balled to the Midwest and further East which had to

Worker and supervisor, car factory, Moscow, USSR, 1954

> They just have a very interesting distribution of technological prowess. Russians never lacked technology as such. Entire Eastern Bloc had tons of great innovators, engineers, scientists. The problem was always introducing it to mass production. It looked kind of like that: scientists modeled
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