A decade ago, one third of women Ph.D.s past 40 were childless.
Today that fraction has dropped to a quarter.
(Thank you Pew Center for another nifty study.)
In my own little faculty at Centre College, six female colleagues have had babies in the past three years. One was born yesterday. Her birth announcement was the first I had seen with a full account of the classical derivation of her name, with footnotes and web links.