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Editorial
Looking Beyond the Mark: A failure to adequately address the ills of the present is the sad consequence of those people who continually conjure up futuristic fantasies of climatic catastrophes.

Medieval Warm Period Record of the Week
Was there a Medieval Warm Period? YES, according to data published by 802 individual scientists from 476 separate research institutions in 43 different countries ... and counting! This issue's Medieval Warm Period Record of the Week comes from Korallgrottan, Caledonian Mountain Range, Jämtland County, Sweden. To access the entire Medieval Warm Period Project's database, click here.

Subject Index Summary
Agriculture (Feeding the World): An enrichment of the air with CO2 may well have been responsible for the beginning of agriculture; and another such enrichment will likely be required to lift the life-sustaining enterprise to the enhanced intensity level needed to support our still-surging population.

Plant Growth Data
This week we add new results of plant growth responses to atmospheric CO2 enrichment obtained from experiments described in the peer-reviewed scientific literature for: Purple Clover (Wu et al., 2009), Sorghum Hybrid (Wu et al., 2009), Sugar Beet (Burkart et al., 2009), and Wheat (Hogy et al., 2009).

Journal Reviews
Boreal Wildfires and Climate Change: Did the former increase in frequency and severity as the Northern Hemisphere warmed over the course of the 20th century?

The Holocene Temperature History of Northern Europe: How does it compare with the atmospheric CO2 concentration history of the Holocene?

Climate Change as a Stimulus for Evolution: Plants possess the ability to respond to changes in climate in a number of different ways, all of which may interact with the others, creating a wide range of ultimate evolutionary responses.

Daily Temperature Range and Human Mortality: How is it related to global warming?

Bird Biodiversity in China: What are its primary determinants?

Video
Copenhagen Climate Concerns: Many people have expressed grave concerns about what was attempted to be accomplished when representatives of the nations of the world met in Copenhagen in early December 2009, seeking to acquire power to restrict the use of energy produced from coal, gas and oil in the guise of fighting global warming and averting the so-called climate crisis. Recognizing these concerns, we have posted a series of YouTube video vignettes in which various scientists and scholars present the reasons for these concerns. Post them on your own website or blog using YouTube!

4th International Conference on Climate Change
The Fourth International Conference on Climate Change will be held in Chicago, Illinois on May 16-18, 2010 at the Chicago Marriott Magnificent Mile Hotel, 540 North Michigan Avenue, Chicago. It will call attention to new scientific research on the causes and consequences of climate change, and to economic analysis of the cost and effectiveness of proposals to reduce greenhouse gas emissions. To register for the event, or for information about the program, speakers, co-sponsors, and more, click here.

Tell Your Friends!
When was the last time you referred someone to the Center's website? We challenge you to introduce two new people to CO2 Science each week. More...