A nurse treats newborn babies inside the Ana Teresa de Jesus Ponce maternity hospital in Macuto, Venezuela. (Photographer: Adriana Loureiro Fernandez/Bloomberg)
(Bloomberg Businessweek) -- Pandas and white rhinos aren’t the only creatures that are unsuccessful at mating in captivity. The folk wisdom that humans will copulate when left with nothing else to do—dubbed the blackout babies theory—surfaces regularly in the immediate aftermath of disasters, but the baby boom never materializes.