Nature is perceived and valued in many different ways. Often, the types of values that are the most important to people depend on how they cognitively frame desirable human-nature relations. For instance, the value of nature can be seen through a utilitarian lens, e.g., as providing ecosystem...

This review provides a timely summary of the current understanding of the various impacts and contributes positively to the policy debate. We have several key conclusions: (1) Biofuels are diverse and evolving; (2) Greenhouse gas (GHG) benefits vary significantly across various types of biofuels...