Impress your kids with fun facts that are both age-appropriate and surprising. Did you know that ketchup was once sold as medicine in the 1800s, or that Earth has more trees than stars in our galaxy?

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 ...