2000 Oklahoma Pollution Water 
Cars That Think
AUGUST 16, 2021
The main obstacles will be regulatory and, especially, environmental: Supersonic airliners could be hugely more polluting than their subsonic counterparts. The most extensive such experiment took place over Oklahoma City in 1964. Fourteen production aircraft were manufactured, but one was scrapped in 1994 and another crashed in 2000.).
Green Car Congress
MARCH 13, 2009
Creation of this database is a big step forward for researching long-term changes in air pollution and correlating these with climate change. The researchers compared the visibility data to available satellite data (2000-2007), and found it to be comparable as an indicator of aerosol concentration in the air. NASA technique.
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