>>1975660>job opportunity with scientists or some other way to visit these places?Depends what you're keen on doing as a job.
I know quite a few guys that have worked in the arctic, all diesel mechanics, machine operators, and auto electricians (due to the line of work I'm in and the company I was with for years).
Start with:
Who has a presence there?
Oz, NZ and US mostly.
Could you get a work permit for any of these countries? (Not so much about your location, but they'll be employing you from that country.)
What qualifications would you need?
Think of them as small cities. What skills are required? IT, plumbing, builders, electricians, security, mechanics, machine operators (diggers, dozers, snow plows, graders - the USAP has over 120 pieces of CAT gear alone, before you get into all the trucks, snowmobiles etc.) fire brigade, chefs... you name it, there's someone there to do it.
The easiest way to get in is obviously to know someone who knows someone, but all the above countries have sites for their programs that list job vacancies, and you can lodge an expression of interest at any time for them to contact you when your skill is required.
Then you need to pass a psych and medical.
It's not true you need your tonsils or appendix removed.
That should give you a start anyway.
Desert travel:
It's more the people than the desert that's super dangerous. Don't go to any 3rd world country on your own the first few times at least. And if you do, I'd recommend spending a few weeks with someone local so you get a feel for the place before venturing off alone. Life is cheap in a lot of places. I've done about 6 around Africa, but I grew up somewhere as bad or worse, so wasn't too uncomfortable anywhere I went.