“In Nebra’s SF novel, advanced extraterrestrials responding to a summons from Earth’s endangered and oppressed Indigenous tribes issue human civilization an ultimatum”
“A radical-environmentalist spin on Arthur C. Clarke’s Childhood’s End (1953), Nebra’s narrative will find favor with those who have fantasies of captains of industry and world leaders being brought to account by a galactic Greenpeace for crimes against nature”
“Well-told, persuasive ecological SF”
- Kirkus Reviews