To its 5,000 salesmen across the U.S., Grolier Inc., publisher of America’s oldest encyclopedia, last week handed out an odd-looking new product to sell door to door. A green, windowed, sheet-metal ...

A new children’s book, titled Simple Machines Made Simple, wants to demystify mechanical engineering for kids as young as a year old. It recently beat its Kickstarter goal by 700%—raising more than ...