Editorial
Climate Model Problems: VI. The Double-ITCZ Problem: What is it? How bad is it? And how pervasive is it?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from the Yangtze River Delta, China.

Subject Index Summary
Roman Warm Period (Europe - Mediterranean): What does its existence imply about the nature and cause of the Current Warm Period?

Journal Reviews
Detecting Changes in the North Atlantic Meridional Overturning Circulation: How difficult is it? And what do real-world data indicate about the phenomenon?

Intense Typhoons of the Western North Pacific: How have they varied over the past half-century?

Effects of Elevated CO2 on Time of Flowering in Plants: Do they accelerate, delay or not affect time-to-flowering in most plants?

Evolution of Dispersal Ability in the Speckled Wood Butterfly: Adjusting to global warming at the most basic of levels: a butterfly's tale.

Cotton Bolls vs. Cotton Bollworms in a CO2-Enriched World: Which group wins as the air's CO2 content continues to climb?