The National Geographic Society has named Hector Sierra general manager and senior v-p of its book publishing group. Most recently COO of the division, Sierra will be responsible for overseeing business operations and global sales for all categories of National Geographic's trade and digital books. Prior to joining National Geographic in 2000, he held positions with Simon & Schuster and John Wiley & Sons.

Sierra will report to Declan Moore, president of publishing for National Geographic, and will directly oversee the book group’s finance, marketing, sales, and production functions.