Melissa and Dallas Hartwig, authors of The Whole30: The 30-Day Guide to Total Health and Food Freedom (HMH, 9780544609716) will appear on the Today show on Tuesday, April 21.

Due to the nature if live programming, scheduling is subject to change.

Booksellers can order these titles through Ingram at ipage.

To be included in the Authors on the Air compilation, email information--at least TWO days in advance, please--to