Editorial
Environmental Change and Potential Trophic Mismatches: In many cases, the former need not lead to the latter.

Subject Index Summary
Interaction of CO2 and Light on Plant Growth: Under less-than-optimal light intensities, the benefits of atmospheric CO2 enrichment on plant growth are often greater than when light conditions are ideal.

Journal Reviews
2000 Years of Extra-Tropical Northern Hemispheric Temperatures: What important information do they provide about the Medieval Warm Period and its degree of warmth relative to that of the Current Warm Period?

The Impact of Atmospheric Aerosols on North Atlantic Climate: How great is their influence?

Global Warming Produces Smarter Young Lizards: Oh, really? Yes, really!!!

Effects of Ocean Acidification on Juvenile Arctic Pteropods: What are they? - both the effects and the organisms - and why should we care?

Impacts of Thawing Permafrost on Nitrogen in Subarctic Peatlands: Are they positive or negative?

How Earth's Coral Reefs Respond to Atmospheric CO2 Enrichment: A new study along the length of Australia's Great Barrier Reef provides some important insights.

Ocean Acidification Database
The latest addition of peer-reviewed data archived to our database of marine organism responses to atmospheric CO2 enrichment is Northern Star Coral [Astrangia poculata] (calcification rates of azooxanthellate colonies grown at 16°C). 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: Purple Clover (Juknys et al., 2011) and Timothy (Juknys et al., 2011).

Medieval Warm Period Project
Was there a Medieval Warm Period? YES, according to data published by 1110 individual scientists from 637 research institutions in 46 different countries ... and counting! Our latest Medieval Warm Period Record comes from Iberian Peninsula. To access the entire Medieval Warm Period Project's database, click here.

World Temperatures Database
Back by popular demand and upgraded to allow patrons more choices to plot and view the data, we reintroduce the World Temperatures section of our website. Here, users may plot temperatures for the entire globe or regions of the globe. A newly added feature allows patrons the ability to plot up to six independent datasets on the same graph. Try it today. World Temperatures Database.

Climate Change Reconsidered
The 2011 Interim Report of the Nongovernmental International Panel on Climate Change: We provide a link to this report as a courtesy and encourage all to download and read it. The 2011 Interim Report presents an overview of the research on climate change that has appeared since publication of Climate Change Reconsidered: The 2009 Report of the Nongovernmental International Panel on Climate Change. Research published before 2009 was included if it did not appear in the 2009 report or provides context for the new research. Nearly all of the research summarized here appeared in peer-reviewed science journals.