If we're going to go down this road of complaint I feel the need to point out that every major city in the world is built at the intersection of water and those cities all contain significant acreage of landfilled estuary and wetlands that were turned into developable land.
Simply a fabulous video about a major donation to the Museum. https://www.facebook.com/nationalscoutingmuseumbsa I likely will not have the pleasure of seeing it now, as travel is difficult, but I was fortunate to see part of this at least at the 2010 Jamboree.
It is my understanding that the summit was the site of a mountain top mining where the tailings were used to fill the valleys and create the open untreed areas. So, the Korean Jamboree was the second?
I don't see how anyone who is a member of any outdoor conservation organization, of which Scouting is supposedly one, could have attended that WSJ. The Saemangeum sea wall project was on many global watch lists and was fought for years. It's got to be the first time a WSJ was used to christen the destruction of a globally important environmental region.
Not sure I understand your question. No, I was or am not at the current international event. I have in the past attended three Nationals, and I observed many attendees either not getting the heat and humidity challenge or simply ignoring it for some reason. In my active adult life, I have encountered many extreme temperature and weather situations to which I needed to pay attention.
Point is that heat and cold are major factors, but they include the levels of humidity as well which often are overlooked. Precaution is always the main consideration, and most of the time, those precautions are warranted. It they do not come into play, then nothing lost.