Editorial
Global Terrestrial Net Primary Productivity: 2000-2009 and Beyond: Will the historical "greening of the earth" continue?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Hani Village, Liuhe County, Jilin Province, China.

Subject Index Summary
Health Effects of CO2 (Health-Promoting Substances of Medicinal Plants): How does atmospheric CO2 enrichment impact the production of health-promoting substances in medicinal or "health food" plants?

Journal Reviews
Effect of Warming on River Flow Rates: Model Projections vs. Reality: How close does the former come to matching the latter in the case of South Africa's Breede River?

Drought on the Northern Great Plains of America: How common or uncommon is it?

The Medieval and Roman Warm Periods in Southeast Italy: How do they compare with the Current Warm Period?

The Mushroom Corals of Singapore: Global vs. Local Challenges: Which have been the more devastating?

Woody Plants Acting as Carbon and Nitrogen Magnets: What kind of magic is this?