Eco-dystopian novel. The oceans are so full of plastic that they appear semi-solid, animals have undergone all kinds of frightening mutations, and humans are divided into castes. The highest caste lives on the ring, a settlement that floats above the earth. The novel centers on a half-caste girl discovering what is truth and what is disinformation, in her society and her family story. It kept me reading, trying to put the pieces together.