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abrubt transitions from desert to irrigated land in the California Imperial valley). Modern cities, like New York and Tokyo, stand out [[note #1]]  amidst their natural [landscape] [[strikethrough]]surroundings environment [[/strikethrough]][[note #2]--and the first things that caught my eye were the long, straight piers that thrust [[note #3]] out into the water. I found Salina, Kansas (and thereby saved face with my Kansan in-laws) by [[margin note #4]]spotting its long runway amidst the wheat fields near the city. [[strikethrough]] As we passed [[/strikethrough]] over Florida, I could [[strikethrough]] even look out the window [[/strikethrough]] peer through the window and see the launch pad, where we'd started our trip, and the Shuttle Landing Strip, [[note #5]]  where we'd eventually land. 

[[note #1]] only stand out? do they burst out?
[[note #2]] is there a better word? Amorphous?
[[note #3]] streched, [[?]]
[[margin note #4]] lovely
[[note #5]] how far off?

[[strikethrough]] Unfortunately, [[/strikethrough]] some of civilization's more unfortunate effects on the environment [[note #6]] are also evident from orbit. Oil slicks glisten on the surface of the Persian Gulf, [[strikethrough]] and [[/strikethrough]] acid-damaged patches trees dot the forests of central Europe. Some cities [[strikethrough]] look slightly [[/strikethrough]] are out of focus, [[strikethrough]] and [[/strikethrough]] their colors [[strikethrough]] appear [[/strikethrough]] muted, when they're viewed through a pollutant haze. [[margin note #7]] One veteran of a Skylab flight reported [[note #8]] that pollution is much more noticable now than when he first went into orbit in 1974. The horizon didn't appear as sharp, the colors, not quite as bright, the haze dulling. [[/margin]] Spaceflight offers a unique vantage point [[strikethrough]] from which to [[/strikethrough]] for monitoring and mapping pollution levels in the atmosphere, and investigate their effects on the environment. [ERBS; CO(maps); IR film - citrus crop damage; acid rain damage; rain forest in Amazon]. [[margin note #9-#10]]

[[note #6]] planet? 
[[margin note #7]] Can you see [[?]]
[[note #8]] in the early 70's late 70's
[[margin note #9]]redo for interval detail? 
[[margin note #10]](check PJ's press conf)

Most of the Earth's surface is covered with water, and at first glance it all looks the same: blue. But with good [[note #11]] lighting conditions and a couple of orbits of practice, it's possible to make out intricate patterns in the oceans eddies, spirals, [[strikethrough]] and [[/strikethrough]] even thermal fronts become visible because of subtle differences in water color or      

[[note #11]] the right