Scott Simon, National Public Radio host and author, chose a subject close to home for his latest book, “Baby, We Were Meant for Each Other: In Praise of Adoption” (Random House, $22). He and his French wife, former film producer Caroline Richard, have adopted two daughters from China and his poignant and witty memoir speaks not only of their family’s experiences, but also those of other adoptive parents, such as “Freakonomics” author Steven Levitt. Simon, 58, resides on the East Coast with Richard and their daughters Elise and Lina. Currently on a nationwide book tour, Simon’s tour dates are available on his website (www.scottsimonbooks.com).