Before you buy: If you’re in the market for a baby lounger, sleep positioner, wedge, inclined sleeper, weighted sleep sacks or crib bumpers, just know not everything sold online is safe. Third-party retailers on Amazon and other sites often don’t comply with recalls. Always search online for the exact name of a baby or kid product with the word “recall.”

Designer babies: Startup PolygenX is offering wealthy parents-to-be the option to screen embryos for higher IQs. Parents undergoing IVF can also choose embryos based on traits like height, self-control, and risks of obesity and ADHD. I see Xs and Ys with this practice …