Learn how plants respond to higher atmospheric CO2 concentrations

How does rising atmospheric CO2 affect marine organisms?

Click to locate material archived on our website by topic


Volume 4 Number 39:  26 September 2001

Temperature Record of the Week
This issue's Temperature Record of the week is from Mandan, North Dakota. Visit our U.S. Climate Data section to plot and view these data for yourself.

Current Editorial
Out With The New, In With The Old: Dr. Craig Idso reminisces about his 4-year tenure as Center President and Editor of CO2 Science Magazine, which comes to a close on 3 October 2001.  So who will replace him?  Read on!

Subject Index Summaries
Little Ice Age – South America: Climate alarmists pushing for restrictions on anthropogenic CO2 emissions want us to believe that the Little Ice Age and Medieval Warm Period were minor phenomena restricted to lands surrounding the North Atlantic.  If this were true, why do reports of these several-hundred-year-long climatic excursions continue to pour in from Argentina, Chile, Peru, and Venezuela?  And why does the evidence suggest they were solar-induced?

Temperature x CO2 Interaction – Plant Growth Response (Other Species): Most of earth’s plants display increases in photosynthesis and biomass production when exposed to elevated levels of atmospheric CO2.  But what happens when air temperature rises concurrently?  In this summary, we survey the recent scientific literature to get a feel for the fate of agricultural crops under this oft-predicted scenario.

Current Journal Reviews
Hurricanes in Alabama: The authors of this interesting study note that "no hurricane of category 4 or 5 intensity has made landfall in coastal Alabama during the past 120 years of documentary record."  Think what it would mean to the climate alarmists if such a history-shattering hurricane were to hit tomorrow.

The Medieval Warm Period and Little Ice Age in Russia: A new study provides another embarrassing piece of evidence for climate alarmists who claim the 1990s were warmer than any other period of the past millennium.

Are Climate Models Up to the Challenge Required of Them?: Definitely not.

Effects of Elevated CO2 on Needle Characteristics and Chlorophyll Fluorescence in Young Scots Pine Trees: Long-term exposure to elevated atmospheric CO2 concentrations often causes changes in the characteristics of leaves, including reductions in their nitrogen contents.  In this study, the authors report on CO2-induced leaf changes and how they impact the photosynthetic process in Scots pine seedlings.

Long-Term Atmospheric CO2 Enrichment Reduces Dark Respiration in Scots Pine: After enriching the air’s CO2 content with an extra 400 ppm CO2 for two years, Scots pine seedlings rooted in the ground within open-top chambers responded by reducing their needle dark respiration rates by about 30%.  Such significant reductions in respiratory carbon losses will undoubtedly lead to greater carbon sequestration in this economically important coniferous species.