Some of the most interesting organisms can be found in these sort of extreme environments.
Not really related to the article, but I'm really fond of this one, found in salt pools, for its beautiful and unique morphology: https://en.wikipedia.org/wiki/Haloquadratum
There are a lot of interesting organisms. Some eats away plastic, some grows back their limbs, and so on. I am pretty sure people are doing researches on them, as we would like to have that kind of regenerative power. I do not have a better list now, but I have ran across a lot more, interesting ones.
Not really related to the article, but I'm really fond of this one, found in salt pools, for its beautiful and unique morphology: https://en.wikipedia.org/wiki/Haloquadratum