Editorial
Environmental Stresses and Plant Methane Emissions: A new study suggests that the former leads to the latter, and that various global change processes could cause more stress in plants on a global scale, stimulating undesirable CH4 emissions.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from the Northern Range of Yellowstone National Park, Wyoming, USA.

Subject Index Summary
Extinction (Model Predictions): Like the early reports of Mark Twain's death, climate-alarmist reports of impending species extinctions due to CO2-induced global warming have been greatly exaggerated.

Journal Reviews
The Recent Trend of Extremely Damaging U.S. Storms: Are they increasing or decreasing in number? ... and why?

The MWP and LIA in the Canadian Arctic Archipelago: A new proxy for Arctic sea ice provides evidence for the Medieval Warm Period and Little Ice Age high above the Arctic Circle.

Primary Production in Future CO2-Enriched Ocean Water: How might it differ from that of today?

Aboveground Biomass Response of a Fast-Growing C3 Plant to Super-Elevated CO2 Concentrations: How high can the air's CO2 content go and C3 plants still be stimulated?

Fine-Root Survivorship of Ponderosa Pine Trees: CO2 vs. O3: Which trace gas wins the struggle for control of the trees' fine roots?