Greg Critser Books

Fat Land: How Americans Became the Fattest People in the World

By Greg Critser

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Eternity Soup: Inside the Quest to End Aging

By Greg Critser

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An analysis of longevity science and anti-aging medicine offers insight into the anti-aging industry, reveals groups who are profiting from dubious products, and considers the transformation of hea...

Jumpstart to Skinny

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#1 NEW YORK TIMES BESTSELLER • LOSE UP TO 20 POUNDS IN 21 DAYS!In The Skinny Rules, celebrity trainer and coach of NBC’s The Biggest Loser Bob Harper delivers the ultimate strategy for healthy, lon...

Fat Land: How Americans Became the Fattest People in the World

By Greg Crister, Greg Critser

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"Fat Land highlights the groundbreaking research that implicates cheap fats and sugars as the alarming new metabolic factors making our calories stick, and shows how and why children are too often...

Fat Land

By Greg Critser

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Generation Rx

By Greg Critser

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Generation Rx

By Greg Critser

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Fat Land

By Greg Critser

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National Geographic Traveler

By Greg Critser

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The National Geographic Traveler

By National Geographic Society, Greg Critser

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.