Editorial
Nonsensical Noise or Solar Signal?: The search for a sun-climate linkage continues apace.

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from the Northern Icelandic Coast.

Subject Index Summary
Monoterpenes: How are plant emissions of these biogenic trace gases affected by rising air temperatures and atmospheric CO2 concentrations? ... and why do we care?

Journal Reviews
Low-Lying Reef Islands and the Threat of Sea Level Rise: Just how bad has the situation become?

Hail in China: 1960-2005: How much worse has this extreme weather phenomenon become as a result of the planet's "unprecedented" global warming?

Prior Warm Periods at Austria's Lake Oberer Landschitzsee: When did they occur? ... and how did their warmth compare with that of the Current Warm Period?

Forest Responses to Atmospheric CO2 Enrichment: Are there differences among boreal, temperate and tropical locations?

Isoprene Emissions from Trembling Aspen Leaves: How are they affected by atmospheric CO2 enrichment? ... and why is the phenomenon important?