I remember reading a short-story collection that could be about twenty years old, but the book was older, maybe 70s or 80s. After each story there was a sort of scientific explanation. The book was in Czech, but almost certainly translated from English.
One story was about a house designed as the 3D unfolding of a hypercube that collapses during an earthquake into an actual hypercube with people trapped inside. Another story that may have been in the same book was about a goose that lays actual golden eggs utilizing cold fusion.