Editorial
CMIP5 Climate Model Biases: How many are there? ... and how significant are they?

Subject Index Summary
Biofuels (Economics): It appears the dream of growing the fuel required to keep the engines of industry humming -- as well as the engines that enable many of our leisure pursuits -- is simply too good to be true.

Journal Reviews
A 3,000-Year Record of Solar Activity: How unique is the modern record and what implications might that hold in explaining 20th century warming?

Antarctic Sea Ice Trends of the Southern Ocean: Do they pose a problem for CMIP5 climate models?

Could Earth's Coral Reefs Adapt to Any Future Global Warming?: A new study - actually published in Science - suggests that they probably could.

Woody Plant Encroachment on the USA's Southwestern Desert: What has likely been the cause of this historical "greening-of-the-earth" phenomenon?

The Climate Envelope Concept Is Not Applicable to the Real World: The simplistic concept is simply too simplistic.

The Likely Fate of Sea Stars in an Acidifying and Warming Ocean: Is it beautiful or bleak?