Editorial
Do Earth's Soils Contain Enough Nitrogen for Its Plants to Receive the Full Benefits of Atmospheric CO2 Enrichment?: Once again, experiment trumps theory.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Gallipoli Terrace, Gulf of Taranto, Ionian Sea, Central Mediterranean.

Subject Index Summary
Tornados: Have they increased in frequency and ferocity in response to 20th-century global warming?

Journal Reviews
The Top-of-the-Atmosphere Radiation Budget: Model Simulations vs. Direct Measurements over the Tropics: Are they compatible? ... or are they significantly at odds with each other?

Landfalling Tropical Cyclones of East Asia: Have they increased in frequency as the planet has warmed?

Elevated CO2 Leads to More Nutritious Spinach ... and More of It!: "Popeye" would have celebrated the rising CO2 content of our evolving atmosphere.

Neotropical Tree, Shrub and Liana Species Richness: To what environmental factor is the species richness of the three woody-plant types most tightly coupled?

CO2 Enrichment of a Scrub-Oak Woodland Low in Nitrogen: Can the growth-promoting effect of elevated CO2 be sustained in such a circumstance?