These stories are set in a time line that branched from yours and mine sometime after the close of World War Two. Much in it remains familiar; some things are very similar. But major differences have developed. The geogravitic power converter has energized economies while greatly easing energy, water, and pollution problems.
But the blessing is mixed. The GPC has brought more than cheap, clean, abundant energy and the new physics: The resulting flood of scientific and technological innovations is accelerating changes in society, with outgrowths positive and negative, attractive and ugly, exciting and fearsome.
Homo sapiens has major adjustments to make.