Ruled by Hades, the god of the underworld, the infernal rivers of Greek mythology are often mentioned in ancient literature.

In “What Fell From the Sky,” by Adrianna Cuevas, and “Oasis,” by Guojing, the best examples of humanity aren’t necessarily human.

I remember growing up on Hydra every summer in the 1980s, leaving Salt Lake City, Utah to go to our home on my father’s ...