South Korea evacuates thousands from troubled Scout jamboree ahead of typhoon

Extreme heat and inadequate facilities led to illnesses and early departures of some contingents.
Approaching Typhoon Khanun prompted total evacuation of remaining scouts from coastal camp.
Scouts relocated to Seoul area venues; event to continue with adjusted program.
Questions raised about planning and preparations for challenges like heat and sanitation.
Evacuation latest hurdle for jamboree after weather woes, hygiene issues, controversies.