The hierarchy of predators & parasites.
Atomic art, ancient artifice & amber amulets.
Itinerant lifestyles & moments of clarity about powerlessness.
Floating cities & irrigation tunnels.
A shortage of wives.
Viking grave goods & high-status immigrants.
Alternatives to guard dogs.
Pygmy nets & raven scouts.
Hyperfeminine healers & the trope of self-sacrifice.
Social bonds & sperm storage.
Intergalactic teleportation & organic robots.