This is a real shame. Nautilus is without a doubt the most consistently interesting and high-quality publication I read. I have just renewed my Prime membership, and hope others do the same. (Or that they get the investment they need and deserve.)
A subscription isn't that expensive, and part of making the world you want to live in (one with greater scientific literacy) is putting your money where your mouth is...
FWIW, you can also donate at: http://www.nautilusthink.org/donate
I suppose the first page might leak the amount of your donation, but nothing that's very sensitive.
From what is said in the article, they are getting the investment that they need, but things are moving slowly. I don't know how true that is, but I want to believe.