Editorial
The Drying of Costa Rican Tropical Montane Cloud Forests: What is responsible for it: global warming or upwind logging?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Cold Air Cave, Makapansgat Valley of South Africa. To access the entire Medieval Warm Period Project's database, click here.

Subject Index Summary
Carbon Dioxide (Urban CO2 Dome - Other U.S. Cities) -- Summary: What do studies of U.S. cities other than Phoenix, Arizona, reveal about the urban CO2 dome phenomenon? ... what do they reveal about the phenomenon's current impact on urban plants? ... and what do they portend for much of the planet's non-urban plant life in the future?

Journal Reviews
The Medieval and Roman Warm Periods in Antarctica: An important new study indicates they were both warmer than the Current Warm Period.

Millennial-Scale Climate Change in New Jersey, USA: It likely has its origin in the millennial-scale variability of solar activity that produced the Current Warm Period, as well as the Little Ice Age, Medieval Warm Period, Dark Ages Cold Period, Roman Warm Period, and so forth ad infinitum back through time.

The Hydrologic Cycle on the Tibetan Plateau: 1961-2000: How has it changed over the last forty years? ... and what do the results imply about the veracity of the IPCC's climate model projections?

Biogenic Methyl Iodide Production in the World's Oceans: What drives it? ... and how does it relate to global warming?

Effects of Elevated Atmospheric CO2 on the Growth of a Common Microalga: How significant are they? ... and what do they imply about the future rate of rise of the air's CO2 content?