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Volume 12 Number 19:  13 May 2009

Editorial
The Amazing Amazon Rainforest: Not even a once-in-a-century drought could long curtail its inexorable positive growth response to the ongoing rise in the air's CO2 content.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Orco River Valley, Northwestern Italian Alps, Italy.

Subject Index Summary
Solar Influence on Climate (Cosmic Rays): How might solar-modulated time-varying fluxes of cosmic rays penetrating earth's atmosphere impact its climate? ... and how likely is the theory to be correct?

Journal Reviews
A 265-Year Reconstruction of Lake Erie Water Level: What does it imply about global warming and the volume of this important repository of life-giving water?

Fire as a Negative Climate Feedback?: How does it work?

Rapid Adaptation to Potential Effects of Climatic Change Via Natural Selection: One can learn a lot from a mosquito fish.

Helping Halophytes Combat Soil Salinization: Atmospheric CO2 enrichment enables salt-tolerant plants to more effectively reverse soil salinization and reclaim seriously degraded land, while simultaneously boosting their value as significant cash crops.

Greenhouse Production of Cucumbers: Even modest atmospheric CO2 enrichment can lead to significant increases in crop yield and water use efficiency, as well as decreases in fertilizer loss to waste water that would otherwise pollute surrounding land and waterways.