Editorial
Will Global Warming Reduce Crop Yields?: Climate alarmists keep inventing ever worsening scenarios, as corrupted "peer review" and unwarranted publication run rampant in journals sympathetic to their cause.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Lake WB02, Northern Victoria Island, Nanavut, Canada.

Subject Index Summary
Health Effects (Temperature -- Cardiovascular): What gives the human heart more problems: temperatures at the high end of our experience or the low end?

Journal Reviews
A New Analysis of the Urban Heat Island Effect: A different way of defining the phenomenon makes it more amenable to assessment via remote sensing and comparative analysis among cities located within different biomes.

The Medieval Warm Period in Greenland: How did its warmth compare with that of the present?

Health Effects of Seasonal Cold in Arctic Regions: Is it as significant as it is in warmer regions?

Effects of Elevated CO2 on the Productivity of Two CAM Plants: Are they as great as the responses that have been observed in C3 plants?

Butterfly Responses to 35 Years of Regional Warming and Land Use Change in the Sierra Nevada Mountains of Northern California: Which of the two types of change was the more powerful in terms of eliciting butterfly responses? ... and what were the responses?