Natural gas resource assessments are a commonly used tool by industry, academia, and government to understand the current and near-term recoverability of the nation's resource base. However, these resource assessments tend to be static pictures of a resource that is, in reality, highly dynamic. Assessments based on gas-in-place (GIP) analysis and iterative modeling of resource recoverability under a variety of technology/policy scenarios provide improved means to identify the most promising approaches to expanded resource recoverability.