Editorial
Regional Biodiversity in a Warmer World: If the earth continues to warm, will regional species richness increase or decrease?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from the Dandak Cave, Kanger Valley National Park, Chhattisgarh, India.

Subject Index Summary
Peatlands: How will they be affected by the nigh-unto-unstoppable rising atmospheric CO2 concentration and a possible resuming of global warming?

Journal Reviews
Climatic Effects of Aerosols Over Europe: How have they changed over the past quarter century?

Extreme Floods of Southern France: How have they changed over the past quarter century?

The Roman Warm Period in Denmark: Intersecting data from palaeoclimatology and anthropology tell an interesting story.

Shifts in Plant Distributions in a Warming World: Can they occur rapidly enough to keep up with climate change?

Soil Organic Carbon Decomposition: Will rising temperatures enhance the phenomenon, thereby augmenting global warming?