It’s that time of the year when you’re making your list, checking it twice, for gifts that spark a love of science for the kids in your life. Ira talks with Mahnaz Dar, young readers’ editor at Kirkus ...

Everybody knows that science textbooks (or any textbooks, for that matter) are notorious for their high prices. Thus, it is always refreshing—and a bit exhilarating—to come across entire free texts.