Editorial
Of Droughts and Megadroughts in North America: How are they related to greenhouse-gas forcing of climate?

Subject Index Summary
Acclimation (Tree Species: Pine): Earth's pine trees appear to be well adapted to positively respond to increases in the air's CO2 content under all sorts of environmental conditions.

Journal Reviews
Biofuels: Their Negatives with Respect to Nitrogen: What are they?

Using Magnetism to Study the Medieval Warm Period: Where and how was it recently done?

Unexpected Biological Resilience to Climate Change: How and where has it been discovered?

Flocks of Birds Coping with Climate Change: ... and doing it year after year after year.

Effects of Elevated CO2 on Longevity and Fecundity of an Invasive Weevil Feeding on Aspen, Birch and Maple Foliage: What are they? ... and how significant are they?

Medieval Warm Period Project
This issue's Medieval Warm Period Record comes from Bay of Vilaine, Atlantic Coast of France.

Ocean Acidification Project
This issue's addition of peer-reviewed data archived to our database of marine organism responses to atmospheric CO2 enrichment is Blue Mussel [Mytilus edulis]. To access the entire database, click here.

Plant Growth Database
Our latest results of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature are: Soybean (Ziska, 2010).