It's never been done. I believe that the closest we have come was an MIT team in 2003, which cooled sodium gas to 0.5 nanokelvins. You can read about it at eurekalert.org/pub_releases/2003-09/mio.
Not possible. But people have gotten very very close.
I think some types of refrigeration cycles like ammonia cycle can reach this degree and you can read more about refrigeration herehubpages.com/hub/refrigeration-cycle-in-det.
I have the answer to your question and your answer is....THE FREEZENATOR! :) LOL:).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.