Editorial
The World's Water Problems: What are they? And what can be done about them?

Medieval Warm Period Record of the Week
This issue's Level 3 Medieval Warm Period Record of the Week is from Saki Lake, Crimean Peninsula, Ukraine.  To access the entire Medieval Warm Period Project's database, click here.

Subject Index Summary
Little Ice Age (Solar Influence - Temperature): How does understanding the cause of the cold temperatures of the Little Ice Age help us identify the cause of the higher temperatures of the Current Warm Period?

Journal Reviews
CO2 Effects on Carbon and Nitrogen in a Sweetgum Forest: Are there any signs that insufficient nitrogen availability will ultimately curtail the carbon sequestering effects of atmospheric CO2 enrichment in this intensively studied ecosystem?

CO2 Effects on Carbon and Nitrogen in a Loblolly Pine Forest: Are there any signs that insufficient nitrogen availability will ultimately curtail the carbon sequestering effects of atmospheric CO2 enrichment in this intensively studied ecosystem?

CO2 Effects on Carbon and Nitrogen in a Scrub Oak Forest: Are there any signs that insufficient nitrogen availability will ultimately curtail the carbon sequestering effects of atmospheric CO2 enrichment in this intensively studied ecosystem?

CO2 Effects on Carbon and Nitrogen in Numerous Ecosystems: Are there any signs that insufficient nitrogen availability will ultimately curtail the carbon sequestering effects of atmospheric CO2 enrichment in earth's terrestrial ecosystems?

A Meta-Analysis that Claims to Support the PNL Hypothesis: The data are what they are, and the analysis is what it is; but there are other analyses of some of the same data, including additional data, that tell a much different story.