The vast pollution which occurs globally can have a significant impact on air quality on a local scale. The reason for this is quite simple: polluted air can easily get trapped beneath a cloud cover, or be literally "blown" away to other locations, and when much polluted air gets accumulated, it can have devastating heath effects on a local population, not just to humans, but to animals and plants as well. Overall, the vast global pollution can effect the smallest of regions on an unprecedented scale.
The north end of Earth's axis is tilted toward the sun from March 21 until September 21 ... Spring and Summer in the northern hemisphere, which includes North America.
But you must bear in mind that having even a masters degree or PhD from the US does not guarantee a job elsewhere except if vacancies exist. So do your homework, contact agencies that recruit for vacancies in Seoul. Good luck
