BMW has provided a glimpse of its electric future with the unveiling of two electric concepts, the first to come from its e-mobility division.

Although the cars are conceptual studies that probably won’t see production, they provide the best view yet of the electric i3 and plug-in hybrid i8 models the company promises to deliver within three years. They also suggest the German automaker is serious about launching “BMW i” electric vehicle brand.

“We are marking another milestone in the history of the BMW Group,” Norbert Reithofer, board chairman, said as the cars were unveiled Friday in Fra...

Children born to mothers who are stressed during pregnancy may become adults with prematurely aged cells.

A comparison of 94 young adults found those subjected to prenatal stress tended to have white blood cells with shorter telomeres, the protein caps that prevent chromosome tips from fraying when cells divide.

Whether telomere shortening is a cause of aging’s ravages, or if age-related deterioration causes telomeres to shorten, isn’t known. Either way, shortening is linked to chronic disease risk and diminished longevity.

White blood cells of prenatally stressed adults “had aged the equivalent ...